General Physics Questions And Answers, Set 34

General Physics Questions And Answers

Q1. 

The PSLV rockets of India launch satellites into the high-earth orbit.

Answer : 

False

Q2. 

What is the total energy possessed by a satellite of mass “m” orbiting above the earth of mass “M” and radius “R” at a height “h”?

Answer : 

-[(G*M*m)/2*(R+h)]

Q3. 

If the kinetic energy of a satellite is halved, its orbital radius becomes _____

Answer : 

2 times

Q4. 

If a satellite is orbiting as close to the earth’s surface as possible _____

Answer :  

its speed is maximum

Q5. 

The escape velocity of an object from the surface of the planet does not depend on the mass of the object.

Answer : 

True

Q6. 

If the earth lost 99% of its mass, the escape velocity would _____

Answer : 

decrease 10 times

Q7. 

The value of gravitational potential outside a uniform thin spherical shell is the same everywhere.

Answer : 

False

Q8. 

The time period of a simple pendulum on the surface of the earth is “T”. What will be the time period of the same pendulum at a height of 2 times the radius of the earth?

Answer : 

3T

Q9. 

The gravitational constant is an empirical constant.

Answer :  

True

Q10. 

The value of acceleration due to gravity of earth at the equator is less than that of the poles due to _____

Answer : 

shape and rotation of the earth

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