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 "

Try The Short Questions For ICS Part 1 Physics Chapter 5 Short Questions Test

Total Questions10
Available Sets3

Start Test Download PDF

Physics - ICS Part 1 Physics Chapter 5 Short Questions Test

Question # 1

Why is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?

Ans 1: The major force acting on Earth is the pull of the Sun and no other sizeable toque is experienced by it. The Earth's axis of rotation, therefore remains fixed in one direction with reference to the universe around us.

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 centripetal force; write its formula and unit.

Ans 1:

Question # 4

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 # 5

What is meant by centripetal force?Write down its formula

Ans 1:

Question # 6

Why banked tracks are needed for turns?

Ans 1: Banked tracks are needed because friction alone cannot provide energy for centripetal force.
If the road is banked, so that the outer edge is above the inner edge, then a portion of the normal force from the road on the tyre points towards the center of the track; this fraction of the normal force can provide enough centripetal force to keep the car moving in a circle.

Question # 7

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

Ans 1: It states that
"Grasp the axis of rotation in right hand with the fingers curling in the direction of rotation , then the erect thumb will give the direction of angular velocity and angular momentum"

Question # 8

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 # 9

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 # 10

Write down application of communication satellites.

Ans 1: A satellite communication system consist of three geo-stationary satellites.There are over 200 Earth stations which can transmit and receive signals.INTELSAT-VI operates at microwave frequencies 4, 4, 11 and 14 Ghz and has a capacity of 30,000 two way telephone circuits plus three TV channels.
Geo-stationary satellite are very useful for worldwide communication,weather observation, navigation, and other military uses.

Submit

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

Set 1

10 Questions
Start
Set 2

10 Questions
Start
Set 3

10 Questions
Start

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

Question # 1

Why is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?

Ans 1: The major force acting on Earth is the pull of the Sun and no other sizeable toque is experienced by it. The Earth's axis of rotation, therefore remains fixed in one direction with reference to the universe around us.

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 centripetal force; write its formula and unit.

Ans 1:

Question # 4

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 # 5

What is meant by centripetal force?Write down its formula

Ans 1:

Question # 6

Why banked tracks are needed for turns?

Ans 1: Banked tracks are needed because friction alone cannot provide energy for centripetal force.
If the road is banked, so that the outer edge is above the inner edge, then a portion of the normal force from the road on the tyre points towards the center of the track; this fraction of the normal force can provide enough centripetal force to keep the car moving in a circle.

Question # 7

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

Ans 1: It states that
"Grasp the axis of rotation in right hand with the fingers curling in the direction of rotation , then the erect thumb will give the direction of angular velocity and angular momentum"

Question # 8

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 # 9

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 # 10

Write down application of communication satellites.

Ans 1: A satellite communication system consist of three geo-stationary satellites.There are over 200 Earth stations which can transmit and receive signals.INTELSAT-VI operates at microwave frequencies 4, 4, 11 and 14 Ghz and has a capacity of 30,000 two way telephone circuits plus three TV channels.
Geo-stationary satellite are very useful for worldwide communication,weather observation, navigation, and other military uses.

Submit

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

Question # 1

Define centripetal force; write its formula and unit.

Ans 1:

Question # 2

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 # 3

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

Ans 1: S satellite whose orbital motion is stationary along the earth is called geostationary satellite. The time period of satellite is equal to the time period of spin motion of the earth.
A geostationary satellite covers 120° of longitude. So the whole earth can be covered by three correctly positioned geo-stationary satellites.

Question # 4

What is mean by angular momentum?

Ans 1:

Question # 5

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 # 6

What are Artificial Satellites?

Ans 1: Artificial Satellites are the man-made objects that orbit around the Earth.

Question # 7

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

Ans 1:

Question # 8

How would you determine the direction of angular momentum?

Ans 1: The direction of angular momentum can be determined by right hand rule:
"Grasp the axis of rotation in right hand with the figures curling in the direction rotation then the erect thumb will give the direction of angular momentum."

Question # 9

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

Ans 1: The direction of angular momentum and angular velocity 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 and angular momentum."

Question # 10

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

Ans 1: Newton discovered the inverse square law of gravity. Einstein's theory also says that gravity follows an inverse square law (except in strong gravitational fields), but it gives us a physical picture of how gravity works. The bending of star light caused by the gravity of the Sun was measured during a solar eclipse in 1919, it was found to match Einstein's Prediction rather than Newton's.

Submit

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

Question # 1

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

Ans 1:

Question # 2

How is artificial gravity created?

Ans 1: Artificial gravity is the gravity like effect produced in an orbiting spaceship to overcome weightlessness.To create artificial gravity the spaceship is set into rotation around its own axis. The astronaut then is presses towards the outer rim and exerts a force on the floor of the spaceship in much the same way as on the earth.

Question # 3

Define angular momentum and give its dimension.

Ans 1:

Question # 4

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.

Question # 5

What are Artificial Satellites?

Ans 1: Artificial Satellites are the man-made objects that orbit around the Earth.

Question # 6

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 # 7

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 # 8

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

Ans 1: To orbit the planet and not come crashing down, a spacecraft has to travel forward (tangential to Earth ) fast enough that it compensates for the fall downwards. The trajectory of its fall has the same curvature as earth's surface. So it will never reach the earth.

Question # 9

What is meant by centripetal force?Write down its formula

Ans 1:

Question # 10

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.

Submit

Physics

5th Chapter

ICS Part 1 Physics Short Questions Test

Here you can prepare ICS Part 1 Physics English Medium Chapter 5. Click the button for 100% free full practice test.

Start Chapter 5 Test

Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter 10

Chapter 11

Short Questions
ICS Part 1

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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 is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?

On what factors moment of inertia depends?

Define centripetal force; write its formula and unit.

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

What is meant by centripetal force?Write down its formula

Why banked tracks are needed for turns?

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

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

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

Write down application of communication satellites.

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 is the axis of rotation of Earth remains fixed in one direction with respect to the universe around it?

On what factors moment of inertia depends?

Define centripetal force; write its formula and unit.

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

What is meant by centripetal force?Write down its formula

Why banked tracks are needed for turns?

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

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

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

Write down application of communication satellites.

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

Define centripetal force; write its formula and unit.

Define Moment of Inertia.Write its formula.

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

What is mean by angular momentum?

Define angular velocity give its units and dimensions.

What are Artificial Satellites?

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

How would you determine the direction of angular momentum?

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

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

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

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

How is artificial gravity created?

Define angular momentum and give its dimension.

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

What are Artificial Satellites?

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

Explain the difference between tangential velocity and angular velocity.

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

What is meant by centripetal force?Write down its formula

Define Moment of Inertia.Write its formula.

ICS Part 1 Physics Short Questions Test

Is this page helpful?

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