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

1.

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

2.

True or False (1 Mark)

Q. Outside the earth, g varies as 1/(R + h)².

3.

True or False (1 Mark)

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

4.

True or False (1 Mark)

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

5.

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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.

6.

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

7.

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Q. The CGS unit of weight is the ……….

8.

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

9.

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

10.

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

11.

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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 ……….

12.

True or False (1 Mark)

Q. Weight is a vector quantity.

13.

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Q. Mass is a vector quantity.

14.

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Q. The SI unit of weight is the ……….

15.

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

16.

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

17. Select Correct Option (1 Mark)

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

18.

True or False (1 Mark)

Q. g has maximum value at the equator.

19.

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

20.

True or False (1 Mark)

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

21.

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

22.

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

23.

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

24.

True or False (1 Mark)

Q. The value of G changes from place to place.

25.

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