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

Question # 1

Why you wear seat belts?

Ans 1: During collision, the passengers move forward towards the windscreen due to inertia. The seat belt prevents the passenger from moving forward. And lessened the chances of injury.

Question # 2

On what factors moment of inertia depends?

Ans 1: The moment of inertia is I =mr²
^{So it depends upon the mass of the body and its distance from the axis of rotation.}

Question # 3

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 # 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

An object orbiting around the earth in said to be a freely falling body. Why?

Ans 1: An object in orbits is said to be freely falling , because the trajectory of its fall has the same curvature as Earth's surface. In fact, the object is falling towards the center of earth but because of spherical shape of earth, it never reaches the surface of earth.

Question # 6

Explain conservation of direction of angular momentum.

Ans 1: The direction of angular momentum along the axis of rotation remains fixed. This is due to the fact that the axis of rotation of an object will not change its orientation unless an external torque causes it to do so .

Question # 7

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

Ans 1:

Question # 8

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 # 9

Define angular velocity, How its direction is determined?

Ans 1: The rate of change of angular displacement is called angular velocity. The direction of angular velocity is along the axis of rotation and can be determined by right hand rule:
"Grasp the axis of rotation in right hand with the figures curling in the direction of rotation then the erect thumb will give the direction of angular velocity."

Question # 10

Define angular displacement and write its S.I unit.

Ans 1:

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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

Why you wear seat belts?

On what factors moment of inertia depends?

Define Moment of Inertia.Write its formula.

Explain the difference between tangential velocity and angular velocity.

An object orbiting around the earth in said to be a freely falling body. Why?

Explain conservation of direction of angular momentum.

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

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

Define angular velocity, How its direction is determined?

Define angular displacement and write its S.I unit.

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

Why you wear seat belts?

On what factors moment of inertia depends?

Define Moment of Inertia.Write its formula.

Explain the difference between tangential velocity and angular velocity.

An object orbiting around the earth in said to be a freely falling body. Why?

Explain conservation of direction of angular momentum.

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

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

Define angular velocity, How its direction is determined?

Define angular displacement and write its S.I unit.

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

What are geostationary orbit and geostationary satellites?

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

Why banked tracks are needed for turns?

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

What is mean by angular momentum?

What is Geo-stationay satellite? How many minimum number of geo-stationary satellites are required fro global coverage coverage of T.V transmission ?

Write down application of communication satellites.

Define centripetal force and centripetal acceleration.

State the right hand rule to find the direction of angular displacement.

Define angular velocity, How its direction is determined?

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

What are geostationary orbit and geostationary satellites?

How would you determine the direction of angular momentum?

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

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

What is meant by centripetal force?Write down its formula

Why Einstein views of gravitation are preferred than Newton's views of gravitation? Explain briefly

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

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

What is Geo-stationay satellite? How many minimum number of geo-stationary satellites are required fro global coverage coverage of T.V transmission ?

Define Moment of Inertia.Write its formula.

ICS Part 1 Physics Short Questions Test

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