Sarkari Naukri Topic Important Question - Gravitation

Sarkari Naukri Topic Important Question - Gravitation

1. The period of an artificial geostationary satellite is:

A. 8 hours

B. 12 hours

C. 24 hours

D. 46 hours

Ans. C

2. If the mass of the earth is not changed and its radius decreased by 1% then the acceleration due to gravity on the surface of the earth would be:

A. Increase by 2 %

B. Decrease by 2 %

C. Increase by 9.8 %

D. Remains unchanged

Ans. A

3. When satellite orbits close to a planet, its time period depends upon:

A. The mass of satellite

B. Radius of the planet

C. Mass of the planet

D. Density of the planet

Ans. D

4. The value of universal gravitational constant G is:

A. 9.8 m/s2

B. 6.673×10-11 N m2 kg-2

C. 6.371 x 106 m

D. 1.738 x 10 6 m

Ans. B

5. When body falls towards earth its motion is due to:

A. Gravitational force

B. Motion due to gravity

C. Acceleration due to gravity

D. Because of zero weight

Ans. A

6. Name the world’s first artificial Satellite?

A. Sputnik 1

B. INSAT-1B

C. Explorer 1

D. Aryabhata

Ans. A

7. What is the unit of the magnitude of the weight?

A. Distance (meter)

B. Mass (grams)

C. Force (Newton)

D. None of the above

Ans. C

8. Acceleration due to gravity decreases with:

A. Height

B. Weight

C. Amplitude

D. Altitude

Ans. D

9. Who said that in the universe everybody exerts a gravitational force on every

other body?

A. Einstein

B. Irene Curie

C. Sir Isaac Newton

D. Galileo Galilei

Ans. C

10. Do you know the acceleration of the moon depends upon:

A. Gravitational force exerted on the moon by the Sun

B. Gravitational force exerted on the moon by the Planets

C. Gravitational force exerted on the moon by the Earth

D. Gravitational force exerted on the Earth by the Moon.

Ans. C