ICS Part 1 Physics English Medium Chapter 5 Online Short Questions Test with Answers

Question # 1

What is meant by moment of inertia? Explain its significance.

Ans 1: The product of mass of the particle and square of its perpendicular distance from the axis of rotation is called the moment of inertia.

I =mr²
^{The moment of inertia plays the same role in angular motion as the mass in linear motion.}

Question # 2

What is meant by centripetal force? Write down its formula.

Ans 1:

Question # 3

When mud files off the tyre of a moving bicycle, I what direction does it fly?

Ans 1: Adhesive force between mud and tire is weal. When the mud files off the tyre of a moving bicycle, it always files along the tangent to the tyre. Because linear velocity is always tangent to the circle.

Question # 4

Explain the difference between tangential velocity and angular velocity.

Ans 1: The linear velocity of a particle moving along a curve or circle is called tangential velocity. Its direction is always along the tangent to the circle.
The rate of change of angular displacement is called angular velocity.The direction of angular velocity is along the axis of rotation of the body by right hand rule. V= rw

Question # 5

What are Artificial Satellites and how they move around the earth?

Ans 1: Satellites are the objects that orbit around the earth.They are put into orbit by rockets and are held in orbits by the gravitational pull of the earth.

Question # 6

Define angular velocity give its units and dimensions.

Ans 1: The rate of change of angular displacement is called angular velocity. The direction of angular velocity is along the axis of rotations of the body.
S.I unit of angular velocity = rad/s
Dimensions of angular velocity = [T^-1]

Question # 7

What is meant by INTEL SAT? At what frequencies the INELSAT-VI operates ?

Ans 1: The largest satellite system managed by 126 countries is international. Telecommunication Satellite Organization (INTELSAT).
The INELSAT-VI operates at microwaves frequencies of 4, 6, 11 and 14 Ghz.

Question # 8

Define Moment of Inertia.Write its formula.

Ans 1: The property of the body to resist any change in its state of rest or uniform angular velocity is called moment of inertia. For a point mass 'm'situated at a distance 'r' from the axis of rotation , the moment of inertia 'I' is given by ; I=mr²
Significance;
Moment of inertia plays the same role in angular motion as that of mass plays in linear motion. It is also called measure of rotational inertia in angular motion.Moment of inertia determines the angular acceleration while mass determines the linear acceleration.

Question # 9

Why the microwaves are used in satellite communication?

Ans 1: Micro waves are used in satellite communication because they travel in a narrow beam, in a straight line and pass easily through the atmosphere of the earth.

Question # 10

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

Ans 1: A geostationary satellite covers 120° of longitude. So the whole earth can be covered by three correctly positioned geostationary satellites.

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ICS Part 1 Physics English Medium Chapter 5 Online Short Questions Test with Answers

Online Short Questions For Chapter 5 "ICS Part 1 Physics Chapter 5 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 5 Short Questions Test

What is meant by moment of inertia? Explain its significance.

What is meant by centripetal force? Write down its formula.

When mud files off the tyre of a moving bicycle, I what direction does it fly?

Explain the difference between tangential velocity and angular velocity.

What are Artificial Satellites and how they move around the earth?

Define angular velocity give its units and dimensions.

What is meant by INTEL SAT? At what frequencies the INELSAT-VI operates ?

Define Moment of Inertia.Write its formula.

Why the microwaves are used in satellite communication?

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

Prepare Complete Set Wise Questions For Chapter 5 "ICS Part 1 Physics Chapter 5 Short Questions Test "

Set 1

Set 2

Set 3

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 1

What is meant by moment of inertia? Explain its significance.

What is meant by centripetal force? Write down its formula.

When mud files off the tyre of a moving bicycle, I what direction does it fly?

Explain the difference between tangential velocity and angular velocity.

What are Artificial Satellites and how they move around the earth?

Define angular velocity give its units and dimensions.

What is meant by INTEL SAT? At what frequencies the INELSAT-VI operates ?

Define Moment of Inertia.Write its formula.

Why the microwaves are used in satellite communication?

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 2

Explain why earth's satellite despite of being freely falling object does not reach the earth.

Why you wear seat belts?

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

What is mean by angular momentum?

Explain conservation of direction of angular momentum.

Define centripetal force and centripetal acceleration.

Explain the difference between tangential velocity and angular velocity.

Define centripetal force; write its formula and unit.

State the direction of the following vectors in simple situation:A) Angular Momentum B) Angular Velocity

On what factors moment of inertia depends?

ICS Part 1 Physics Chapter 5 Short Questions Test - Set 3

When mud files off the tyre of a moving bicycle, I what direction does it fly?

Define angular velocity give its units and dimensions.

Define angular momentum and give its dimension.

State the law of conversation of angular momentum.

Define angular velocity, How its direction is determined?

On what factors moment of inertia depends?

How is artificial gravity created?

What is meant by moment of inertia? Explain its significance.

How would you determine the direction of angular momentum?

Explain how many minimum number of Geo-stationary satellites are required for global coverage of T.V transmission.

ICS Part 1 Physics Short Questions Test

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State the direction of the following vectors in simple situation:
A) Angular Momentum B) Angular Velocity