MCQ-1-Class-10-Science-1-Chapter-1-Gravitation-MSBSHSE

1.

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Q. The SI unit of weight is the ……….

2.

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Q. Due to the …….. force, the earth attracts all objects towards it.

3.

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Q. If the earth shrinks to half of its radius, its mass remaining the same, the weight of an object on the earth will become ……… times.

4.

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Q. The value of the acceleration due to gravity ………….. as we move from the equator to a pole.

5.

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Q. According to Kepler’s first law, the orbit of a planet is ……… with the Sun at one of the ……….

(i) an ellipse (ii) circle (iii) foci (iv) centre

6.

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Q. The ratio g_earth / g_moon is equal to ……….

7.

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Q. According to Kepler’s third law T² is directly proportional to rⁿ, where n=……………..

8.

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Q. The weight of a body is ……… at the poles.

9.

True or False

Q. The CGS unit of the universal constant of gravitation is the dyne-cm²/gram².

10.

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Q. In the usual notation, the acceleration due to gravity at a height A from the surface of the earth is ……….

11.

True or False

Q. If the separation between two particles is doubled, the  gravitational force between the particles becomes half the initial force.

12.

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Q. Outside the earth, the weight of a body varies as ………

13.

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Q. The SI unit of the universal constant of gravitation is ……….

14.

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Q. The escape velocity of a body from the earth’s surface v_esc =

15.

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Q. The acceleration due to gravity does not depend on the ……… of the body.

16.

True or False

Q. The weight of a body is minimum at the poles.

17.

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Q. According to Kepler’s second law, the line joining the planet and the Sun ……… in equal intervals of time.

18.

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Q. The gravitational force between two particles separated by a distance r varies as……….

19.

:

20.

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Q. The CGS unit of weight is the ……….

21.

True or False

Q. At the centre of the earth, the value of theacceleration due to gravity becomes zero.