MCQ session 2: BSc HSC I sem

 01. Which of the following is full form of computer?

A) Commonly operated machine perposely used for technical and educational research

B) Commonly operated machine properly used for technical and educational research

C) Computer operated machine properly used for technical and educational resource

D) All 

02. Smallest unit of data is

A) Bit

B) Byte

C) Nibble

D) All of them

03. Long form of CPU

A) complete processing unit

B) central processing unit

C) computer processing unit

D) none of these

04. After copying the content how many times can you paste?

A) 1

B) 16

C) 32

D) Many

05. WAN stands for

A) Wap Area Network

B) Wide Area Network

C) Wide Array Net

D) Wireless Area Network

06. An error  computer data is called

A) Chip

B) Bug

C) CPU

D) Storage device

07. The instructions for starting the computer are house on

A) Random access memory

B) CD-Rom

C) Read only memory chip

D) All of above

08. 1 nibble equals to

A) 1 bits

B) 2 bits

C) 4 bits

D) 8 bits

09. Perforated paper used as input of output media is known as

A) paper tapes

B) magnetic tape

C) punched papers tape

D) card punch

10. The secondary storage devices can only store data but they cannot perform

A) Arithmetic Operation

B) Logic operation

C) Fetch operations

D) Either of the above

11) Who is the developer of computer?

A) Denis Ritchie

B) James Gosling

C) Charles Babbage

D) none

12. How many arrow keys are there, on your keyboard?

A) 1

B) 2

C) 3

D) 4

13. Who is the inventor of ABC Computer?

A) John v. Atanasoff

B) Clifford Berry

C) Both of above

D) None of above

14. Which of the following is the largest unit?

A) data

B) field

C) record

D) database file

15. Find out which of the following is example of Hardware?

A) keyboard

B) mouse

C) speaker

D) All of above

16. Which of the following is not true for a magnetic disk?

A) It is expensive relative to magnetic tape

B) It provides only sequential access to stored data

C) Users can easily update records by writing over the old data

D) All of above

17. A disadvantage of the laser printer is

A) It is quieter than an impact printer

B) It is very slow

C) The output is of a lower quality

D) None of the above

18. Which of the following is not example of software?

A) Mouse

B) Microsoft

C) MSword

D) All of above

19. Which part of computer is used for mathematical operations?

A) Monitor

B) ALU

C) Mouse

D) Calculator

20. A Compiler is ____

A) a combination of computer hardware

B) a program which translates from one high-level language to another

C) a program which translates from one high-level to a machine level language

D) None of these

21. Which unit holds data temporarily?

A) Input unit

B) Secondary storage unit

C) Output Unit

D) Primary Memory Unit

22. The computer size was very large in

A) First Generation

B) Second Generation

C) Third Generation

D) Fourth Generation

23. A name or number used to identify storage location devices?

A) A byte

B) A record

C) An address

D) All of above

24. Which of the following is not computer language?

A) High level language

B) Medium level language

C) Low level language

D) All of the above

25. Reading data is performed in magnetic disk by

A) Read/write leads

B) Sectors

C) Track

D) Lower surface

26. IBM 7000 digital computer

A) Belongs to second generation

B) Uses VLSI

C) Employs semiconductor memory

D) Has modular constructions

27. Which of the following is meaning of kb?

A) kilobit

B) kilobowl

C) both A and B

D) kilobyte

28. The term ‘computer’ is derived from

A) Greek language

B) Sanskrit language

C) Latin language

D) German language

29. Which statement is valid about magnetic tape?

A) It is a plastic ribbon

B) It is coated on both sides with iron oxide

C) It can be erased and reused

D) All of above

30. Which of the following is the input device?

A) Keyboard

B) mouse

C) scanner

D) All of above

31. A hard copy would be prepared on a

A) Line printer

B) Dot matrix Printer

C) Typewriter terminal

D) All of the above

32. The term GIGO is related to which characteristics of computers?

A) Speed

B) Automatic

C) Accuracy

D) Reliability

33. Which of the following programming language were used in first generation computers?

A) Machine language

B) Assembly language

C) Both of above

D) None of above

34. To locate a data item for storage is

A) Field

B) Feed

C) Database

D) Fetch

35. Which of the  following is the no of keys on keyboard of computers?

A) 50

B) 104

C) 100

D) 75

36. Hard disk is coated in both sides with

A) Magnetic metallic oxide

B) Optical metallic oxide

C) Carbon layer

D) All of the above

37. Which of the following term means to Tb?

A) Terabyte

B) terminal byte

C) terabit

D) all of above

38. An input /output device at which data enters or leaves a computer system is

A) Keyboard

B) Terminal

C) Printer

D) Plotter

39. Which of the following is GB?

A) gigabyte

B) geobyte

C) gilobit

D) None of the above

40. A name or number used to identify a storage location is called

A) A byte

B) A record

C) An address

D) All of above

41. Computer professionals working in a computer centre are

A) Software

B) Firmware

C) Hardware

D) Humanware

42. The keyboard is. ....... device

A) Input device

B) output device

C) both I/p and o/p

D) None of above

43. How many function keys are there on keyboard?

A) 10

B) 8

C) 12

D) 20

44. Which of the following is correct full form of BCD?

A) Binary Coded Decimal

B) Bit Coded Decimal

C) Binary Coded Digit

D) Bit Coded Digit

45. Which of the following is the I/P device?

A) Keyboard

B) Mouse

C) scanner

D) All of the above

46. The  monitor is.... device

A) I/p

B) o/p

C) both of above

D) none of above

47. Main storage is also called

A) Accumulator

B) Control Unit

C) Register Unit

D) Memory

48. Which of the following are (is) considered to be video component?

A) Resolution

B) Color depth

C) Refresh rate

D) All of the alcove

49. How many arrow keys are there on keyboard?

A) 3

B) 5

C) 4

D) 6

50. Memory unit is one part of

A) Input device

B) Control unit

C) Output device

D) Central Processing Unit

51. Microprocessors can be used to make

A) Computer

B) Digital systems

C) Calculators

D) All of the above

52. Which statement is valid about computer program?

A) High level languages must be converted into machine language to execute

B) High level langage programs are more efficient and faster to execute

C) It is more difficult to identify errors in high level language program than in low level programs

D) All of above

53. RAM and ROM are the examples of

A) input device

B) Output device

C) storage device

D) all of above

54. Which of the following is a secondary memory device?

A) Keyboard

B) Disk

C) ALU

D) All of the above

55. The memory which is programmed at the time it is manufactured

A) ROM

B) RAM

C) PROM

D) EPROM

56. One of the popular mass storage device is CD ROM. What does CD ROM stand for?

A) Compactable Read Only Memory

B) Compact Data Read Only Memory

C) Compactable Disk Read Only Memory

D) Compact Disk Read Only Memory

57. Which of the following is the long form of RAM?

A) Random Access Memory

B) Read Access Memory

C) Random Accept Memory

D) All of above

58. FORTRAN is

A) File Translation

B) Format Translation

C) Formula Translation

D) Floppy Translation

59. The programs which are as permanent as hardware and stored in ROM is known as

A) Hardware

B) Software

C) Firmware

D) ROM ware

60. Which of the following memories must be refreshed many times per second?

A) Static RAM

B) Dynamic RAM

C) EPROM

D) ROM

BScHSc I SEM and III SEM | Unit IV | PHYSICS

 01. Which of the following is not valid statement?

A) Hard is referred to mean something temporary

B) Hard is used to mean something tangible

C) Soft is used to mean something permanent

D) Soft is used to mean something tangible

02. Digital devices are

A) Digital Clock

B) Automobile speed meter

C) Clock with a dial and two hands

D) All of them

03. Primary memory stores

A) Data alone

B) Programs alone

C) Results alone

D) All of these

04. After copying the content how many times can you paste?

A) 1

B) 16

C) 32

D) Many

05. WAN stands for

A) Wap Area Network

B) Wide Area Network

C) Wide Array Net

D) Wireless Area Network

06. An error  computer data is called

A) Chip

B) Bug

C) CPU

D) Storage device

07. The instructions for starting the computer are house on

A) Random access memory

B) CD-Rom

C) Read only memory chip

D) All of above

08. 1 nibble equals to

A) 1 bits

B) 2 bits

C) 4 bits

D) 8 bits

09. Perforated paper used as input of output media is known as

A) paper tapes

B) magnetic tape

C) punched papers tape

D) card punch

10. The secondary storage devices can only store data but they cannot perform

A) Arithmetic Operation

B) Logic operation

C) Fetch operations

D) Either of the above

11. Which American computer company is called Big Blue?

A) Microsoft

B) Compaq Corp

C) IBM

D) Tandy Svenson

12. It was in 2028 BS the _________ was brought in to calculate census data.

A) IBM 1400

B) IBM 1401

C) ICL 2950

D) None of above

13. Who is the inventor of ABC Computer?

A) John v. Atanasoff

B) Clifford Berry

C) Both of above

D) None of above

14. Which of the following is the largest unit?

A) data

B) field

C) record

D) database file

15. Find out who is not the inventor of transistors among following names

A) John Burdeen

B) William Shockley

C) Walter Brattain

D) Lee de Forest

16. Which of the following is not true for a magnetic disk?

A) It is expensive relative to magnetic tape

B) It provides only sequential access to stored data

C) Users can easily update records by writing over the old data

D) All of above

17. A disadvantage of the laser printer is

A) It is quieter than an impact printer

B) It is very slow

C) The output is of a lower quality

D) None of the above

18. The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in electronic data processing system is called

A) ASCII

B) EBCDIC

C) BCD

D) All of above

19. Which access method is used to access cassette tape?

A) Direct

B) Sequential

C) Both of the above

D) None of the above

20. A Compiler is ____

A) a combination of computer hardware

B) a program which translates from one high-level language to another

C) a program which translates from one high-level to a machine level language

D) None of these

21. Which unit holds data temporarily?

A) Input unit

B) Secondary storage unit

C) Output Unit

D) Primary Memory Unit

22. The computer size was very large in

A) First Generation

B) Second Generation

C) Third Generation

D) Fourth Generation

23. A name or number used to identify storage location devices?

A) A byte

B) A record

C) An address

D) All of above

24. Which of the following is not computer language?

A) High level language

B) Medium level language

C) Low level language

D) All of the above

25. Reading data is performed in magnetic disk by

A) Read/write leads

B) Sectors

C) Track

D) Lower surface

26. IBM 7000 digital computer

A) Belongs to second generation

B) Uses VLSI

C) Employs semiconductor memory

D) Has modular constructions

27. Which of the following is not electro-mechanical computer?

A) Mark I

B) ABC

C) Zuse

D) UNIVAC

28. The term ‘computer’ is derived from

A) Greek language

B) Sanskrit language

C) Latin language

D) German language

29. Which statement is valid about magnetic tape?

A) It is a plastic ribbon

B) It is coated on both sides with iron oxide

C) It can be erased and reused

D) All of above

30. Which of the following is first generation computer?

A) EDSAC

B) IBM 1401

C) CDC 1604

D) ICL 2950

31. A hard copy would be prepared on a

A) Line printer

B) Dot matrix Printer

C) Typewriter terminal

D) All of the above

32. The term GIGO is related to which characteristics of computers?

A) Speed

B) Automatic

C) Accuracy

D) Reliability

33. Which of the following programming language were used in first generation computers?

A) Machine language

B) Assembly language

C) Both of above

D) None of above

34. To locate a data item for storage is

A) Field

B) Feed

C) Database

D) Fetch

35. Who used punched cards practically for the first time in the history of computers?

A) Charles Babbage

B) Dr. Herman Hollerith

C) Howard Aikin

D) Joseph Jacquard

36. Hard disk is coated in both sides with

A) Magnetic metallic oxide

B) Optical metallic oxide

C) Carbon layer

D) All of the above

37. Which of the following term means to reckon?

A) putare

B) com

C) computa

D) computar

38. An input /output device at which data enters or leaves a computer system is

A) Keyboard

B) Terminal

C) Printer

D) Plotter

39. Which of the following is first generation of computer

A) EDSAC

B) IBM-1401

C) CDC-1604

D) ICL-2900

40. A name or number used to identify a storage location is called

A) A byte

B) A record

C) An address

D) All of above

41. Computer professionals working in a computer centre are

A) Software

B) Firmware

C) Hardware

D) Humanware

42. The first general purpose electronic computer in the world was

A) UNIVAC

B) EDVAC

C) ENIAC

D) All of above

43. The contents of information are stored in

A) Memory data register

B) Memory address register

C) Memory arithmetic registers

D) Memory access register

44. Which of the following is correct full form of BCD?

A) Binary Coded Decimal

B) Bit Coded Decimal

C) Binary Coded Digit

D) Bit Coded Digit

45. Which was the world’s first microcomputer that used Intel 80386 microprocessor chip?

A) IBM PS/2

B) HP-9830

C) DeskPro-386

D) IBM-360

46. The qualitative or quantitative attribute of a variable or set of variables is termed as

A) data

B) information

C) both of above

D) none of above

47. Main storage is also called

A) Accumulator

B) Control Unit

C) Register Unit

D) Memory

48. Which of the following are (is) considered to be video component?

A) Resolution

B) Color depth

C) Refresh rate

D) All of the alcove

49. For what Antikyathera was used?

A) For counting

B) For Calculating tax collection

C) For calculating astronomical positions

D) For calculating firing weapons

50. Memory unit is one part of

A) Input device

B) Control unit

C) Output device

D) Central Processing Unit

51. Microprocessors can be used to make

A) Computer

B) Digital systems

C) Calculators

D) All of the above

52. Which statement is valid about computer program?

A) High level languages must be converted into machine language to execute

B) High level langage programs are more efficient and faster to execute

C) It is more difficult to identify errors in high level language program than in low level programs

D) All of above

53. By programmable machine we mean

A) computers

B) modern television

C) washing machines

D) anything that can be set to perform different taks with suitable programs

54. Which of the following is a secondary memory device?

A) Keyboard

B) Disk

C) ALU

D) All of the above

55. The memory which is programmed at the time it is manufactured

A) ROM

B) RAM

C) PROM

D) EPROM

56. One of the popular mass storage device is CD ROM. What does CD ROM stand for?

A) Compactable Read Only Memory

B) Compact Data Read Only Memory

C) Compactable Disk Read Only Memory

D) Compact Disk Read Only Memory

57. Identify the true statement

A) Computers are 100% accurate but it can suffer from GIGO

B) Computers are reliable because they use electronic component which have very low failure rate

C) Computer is never tired and does not suffer from boredom

D) All of above

58. FORTRAN is

A) File Translation

B) Format Translation

C) Formula Translation

D) Floppy Translation

59. The programs which are as permanent as hardware and stored in ROM is known as

A) Hardware

B) Software

C) Firmware

D) ROM ware

60. Which of the following memories must be refreshed many times per second?

A) Static RAM

B) Dynamic RAM

C) EPROM

D) ROM

61. What do you call the translator which takes assembly language program as input & produce machine language code as output?

A) Compiler

B) Interpreter

C) Debugger

D) Assembler

62. Serial access memories are useful in applications where

A) Data consists of numbers

B) Short access time is required

C) Each stored word is processed differently

D) Data naturally needs to flow in and out in serial form

63. In ________ mode, the communication channel is used in both directions at the same time?

A) Full-duplex

B) Simplex

C) Half-duplex

D) None of the above

64. Who invented Slide Rules?

A) John Napier

B) William Oughtred

C) Gottfried Leibnitz

D) Blaise Pascal

65. The proper definition of a modern digital computer is

A) An electronic automated machine that can solve problems involving words and numbers

B) A more sophistic and modified electronic pocket calculator

C) Any machine that can perform mathematical operations

D) A machine that works on binary code

These questions are suitable for IC3 Computer Fundamentals too!

66. Memory is made up of

A) Set of wires

B) Set of circuits

C) Large number of cells

D) All of these

67. Which of the following is the most powerful computers?

A) Mainframe Computer

B) Mini Computers

C) Micro Computers

D) Super Computers

68. Which of the printers used in conjunction with computers uses dry ink powder?

A) Daisy wheel printer

B) Line printer

C) Laser printer

D) Thermal printer

69. What is the path from which data flow in a computer system is knon as

A) Car

B) Bus

C) Truck

D) Road

70. Which term is used to describe RAM?

A) Dynamic RAM (DRAM)

B) Static RAM (SRAM)

C) Video RAM (VRAM)

D) All of the above

71. In which year was chip used inside the computer for the first time?

A) 1964

B) 1975

C) 1999

D) 1944

72. Assembly language started to be used from

A) first generation computers

B) second generation computers

C) third generation computers

D) fourth generation computers

73. Which technology is more reliable?

A) Mechanical

B) Electro-Mechanical

C) Electronic

D) For reliability it does not matter. So all of above are reliable

74. Which of the following is not an XT microprocessor?

A) 8006

B) 8086

C) 8088

D) None of above

75. Hard disk is coated in both side with

A) Magnetic metallic oxide

B) Optical metallic oxide

C) Carbon layer

D) All of the above

76. ASCII stands for

A) American Stable Code for International Interchange

B) American Standard Case for Institutional Interchange

C) American Standard Code for Information Interchange

D) American Standard Code for Interchange Information

77. Raw facts and figures about any particular topic are

A) Information

B) facts

C) data

D) none of above

78. A computer can solve more than one kind of problem. This is related to which of the following characteristics?

A) Accuracy

B) Reliability

C) Versatility

D) Automatic

79. From which generation computers the printers were used?

A) first

B) second

C) third

D) fourth

80. How many symbols exist in Baudot code?

A) 32

B) 116

C) 58

D) 76

81. Following IC chip integrates 100 thousands electronic components per chip

A) SSI

B) MSI

C) LSI

D) VLSI

82. An application program that helps the user to change any number and immediately see the result of that change is

A) Desktop publishing program

B) Database

C) Spreadsheet

D) All of above

83. In 1830, Charles Babbage designed a machine called the Analytical Engine which he showed at the Paris Exhibition. In which year was it exhibition?

A) 1820

B) 1860

C) 1855

D) 1870

84. What is the name of the new color laptop computer which is powered by a 386 processor at 33 MHz and is built by Epson?

A) AX3/33

B) NEC-20

C) Magnum 2000

D) HCL-3000

85. In analog computer

A) Input is first converted to digital form

B) Input is never converted to digital form

C) Output is displayed in digital form

D) All of the above

86. Which of the following computer is not invented by J.P. Eckert and John Mauchly?

A) ENIAC

B) EDVAC

C) UNIVAC

D) EDSAC

87. When was the company named IBM?

A) 1914

B) 1924

C) 1975

D) None of above

88. Which of the following storage device can store the largest amount of data?

A) Hard Disks

B) Flash Disks

C) Blu-Ray Disks

D) DVDs

89. Who invented Mark I?

A) Howard Aikin

B) J. P. Eckert

C) John Mauchley

D) John v. Atanasoff

90. ALU is

A) Arithmetic Logic Unit

B) Array Logic Unit

C) Application Logic Unit

D) None of above

91. A computer program that converts an entire program into machine language at one time is called a/an

A) Interpreter

B) CPU

C) Compiler

D) Simulator

92. When did arch rivals IBM and Apple Computers Inc. decide to join hands?

A) 1978

B) 1984

C) 1990

D) 1991

93. The purpose of vacuum tube was to NOT ack like

A) an amplifier

B) a switch

C) a router

D) None of above

94. As compared to diskettes, the hard disks are

A) More expensive

B) More portable

C) Less rigid

D) Slowly accessed

95. Which of the following is the most quickly accessible storage?

A) RAM

B) Registers

C) Disks

D) Pen Drive

96. The octal equivalence of 111010 is

A) 81

B) 72

C) 71

D) None of above

97. Excessive parallel processing is related to

A) First generation

B) Fourth generation

C) Fifth Generation

D) Third generation

98. Second generation computers were developed during

A) 1949 to 1955

B) 1956 to 1965

C) 1965 to 1970

D) 1970 to 1990

99. What do you call a single point on a computer screen?

A) Cell

B) Element

C) Pixel

D) Bit

100. Mostly which of the following device is used to carry user files?

A) Floppy Disk

B) Hard Disk

C) RAM

D) CDROM

Answers:

01-B

02-A

03-D

04-D

05-B

06-B

07-C

08-C

09-A

10-D

11-C

12-B

13-C

14-D

15-D

16-B

17-D

18-A

19-B

20-C

21-D

22-A

23-C

24-B

25-A

26-D

27-D

28-C

29-D

30-A

31-D

32-C

33-A

34-D

35-B

36-A

37-A

38-B

39-A

40-C

41-D

42-C

43-A

44-A

45-C

46-A

47-D

48-D

49-C

50-D

51-D

52-A

53-D

54-B

55-C

56-D

57-D

58-C

59-C

60-B

61-D

62-D

63-A

64-B

65-A

66-C

67-D

68-C

69-B

70-D

71-B

72-B

73-C

74-D

75-A

76-C

77-C

78-C

79-B

80-A

81-C

82-C

83-C

84-A

85-B

86-D

87-B

88-A

89-A

90-A

91-C

92-D

93-C

94-A

95-B

96-B

97-C

98-B

99-C

100-A

Unit III - Physics- Homescience- I sem

Newton's laws of motion 

Newton’s laws of motion first stated by English physicist and mathematician Sir Isaac Newton. Laws are about relations between the forces acting on a body and the motion of the body.

Newton’s first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Newton’s second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. The momentum of a body is equal to the product of its mass and its velocity. Momentum, like velocity, is a vector quantity, having both magnitude and direction. A force applied to a body can change the magnitude of the momentum, or its direction, or both. Newton’s second law is one of the most important in all of physics.

 For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation. Conversely, if a body is not accelerated, there is no net force acting on it.

Newton’s third law,

This law states that to every action there is always an equal and opposite reaction.

UCM(Uniform circular motion)

A body moving in a circle of constant radius with a constant speed has a non-zero force acting on it. This force is known as Centripetal force. It is directed towards the center of the circle. Its value is given by the formula: F=mv2/R.

1. When an object tied at the end of a string is whirled in a horizontal circle, the necessary centripetal force for maintaining circular motion is provided by tension in the string.

2. If a car is traveling round a circular horizontal road with uniform speed, the necessary centripetal force for negotiating the curve is provided by force of friction between tyres of vehicle and road surface.

3. The necessary centripetal force is  provided by push due to rails on the wheels of train during taking turn.

4. Moon revolves around the earth in circular orbit. Here the necessary centripetal force is provided by gravitational force of attraction between moon and earth.

Friction is defined as the force that opposes the motion of a solid object over another. There are mainly four types of friction: static friction, sliding friction, rolling friction, and fluid friction. ... Similarly, if V_R < V_L then the point B tends to move forward and hence the friction acts in the backward direction.

Types Of Friction

Following are the friction types which depend on the types of motion:

1. Static Friction
2. Sliding Friction
3. Rolling Friction
4. Fluid Friction

Static Friction

Static friction is defined as the frictional force that acts between the surfaces when they are at rest with respect to each other.

The magnitude of the static force is equal in the opposite direction when a small amount of force is applied. When the force increases, at some point maximum static friction is reached.

Static Friction Examples

Following are the examples of static friction:

• Skilling against the snow
• Creating heat by rubbing both the hands together
• Table lamp resting on the table

Coefficient Of Static Friction

The coefficient of static friction is denoted as µs. The maximum force of static friction is given as the product of the coefficient of static friction and normal force and force of static friction is less than or equal to the product of the coefficient of static friction and normal force. It is given as:

Fs max = µs η and Fs ≤ µs η

Where,

• Fs is the force of static friction
• µs is the coefficient of static friction
• η is the normal force
• Fs max is the maximum force of static friction

Sliding Friction

What Is Sliding Friction?

Sliding friction is defined as the resistance that is created between any two objects when they are sliding against each other.

Examples Of Sliding Friction

Following are the examples of sliding friction:

• Sliding of the block across the floor
• Two cards sliding against each other in a deck

Coefficient Of Sliding Friction

The coefficient of sliding friction is denoted as µs. The force of sliding friction is defined as the product of the coefficient of sliding friction and the normal force. It is given as:

Fs = µs. Fn

Rolling Friction

What Is Rolling Friction?

Rolling friction is defined as the force which resists the humanmotion of a ball or wheel and is the weakest types of friction.

Examples Of Rolling Friction

Following are the examples of rolling friction:

• Rolling of the log on the ground
• Wheels of the moving vehicles

Coefficient Of Rolling Friction

The coefficient of rolling friction is denoted as µr. The force of rolling friction is defined as the product of the coefficient of rolling friction and the normal force. It is given as:

Fs = µr. Fn

Fluid Friction

What Is Fluid Friction?

Fluid friction is defined as the friction that exists between the layers of the fluid when they are moving relative to each other.

Examples Of Fluid Friction

Following are the examples of fluid friction:

• The flow of ink in pen