(Set 2) Gravitation

Q1. 
When an object is transferred from earth to moon ----------.
  1. its mass increase
  2. its weight increases
  3. its mass decreases
  4. its mass remains unchanged

Show Answer

Correct Answer : D

Q2. 
A person can jump higher on the moon's surface than on the earth because
  1. the moon's surface is rough
  2. the acceleration due to gravity in moon is smaller than that on the earth
  3. the moon is cooler than earth
  4. the moon has no atmosphere

Show Answer

Correct Answer : B

Q3. 
The radius of the moon is about one-fourth that of the earth and acceleration due to gravity on the moon is about one-sixth that on the earth. From this, we can conclude that the ratio of the mass of the earth to the mass of the moon is about
  1. 10
  2. 100
  3. 1000
  4. 10000

Show Answer

Correct Answer : B

Q4. 
A geostationary satellite
  1. revolves about the polar axis
  2. has a time period less than that of the near earth satellite
  3. moves faster than a near earth satellite
  4. sense of rotation is from west to east

Show Answer

Correct Answer : D

Q5. 
A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is
  1. zero at that place
  2. balanced by the force of attraction due to moon
  3. equal to the centripetal force
  4. non-effective due to particular design of the satellite

Show Answer

Correct Answer : C

Q6. 
If suddenly the gravitational force of attraction between earth and satellite revolving around it becomes zero, then the satellite will
  1. continue to move in this orbit with same velocity
  2. move tangentially to the original orbit with the same velocity
  3. become stationary in this orbit
  4. move toward the earth

Show Answer

Correct Answer : B

Q7. 
Which one of the following statements about a satellite orbiting around the earth is correct?
  1. Satellite is kept in orbit by remote control from ground station.
  2. Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the earth.
  3. Satellite requires energy from solar panels and solid fuels for orbiting.
  4. Satellite does not required any energy for orbiting.

Show Answer

Correct Answer : D

Q8. 
When an earth satellite dissipates energy, it moves to a
  1. lower orbit and its kinetic energy increases
  2. higher orbit and its kinetic energy decreases
  3. lower orbit and its kinetic energy decreases
  4. higher orbit and its kinetic energy increases

Show Answer

Correct Answer : A

Q9. 
Two satellites are moving in the same circular orbit around the earth, they must have the same
  1. mass
  2. angular momentum
  3. kinetic energy
  4. speed

Show Answer

Correct Answer : D

Q10. 
What is the earth's escape velocity?
  1. 2.8 km/s
  2. 5.6 km/s
  3. 11.2 km/s
  4. 14 km/s

Show Answer

Correct Answer : C

Q11. 
Mass of particular amount of substance 1. is the amount of matter present in it 2. does not vary from place to place 3. changes with change in gravitational force Select the correct answer using the codes given below.
  1. 1,2 and 3
  2. 1 and 2
  3. 2 and 3
  4. only 1

Show Answer

Correct Answer : B

About Us | Contact Us | Privacy & Policy | Terms & Conditions | Refund Policy | Pricing Policy | Cancellation Policy | Shipping & Exchange Policy
© 2024 Copyright: DropperClass.Com | Design and Developed by