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

1.

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

2.

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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 ……….

3. Select Correct Option (1 Mark)

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

4.

True or False (1 Mark)

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

5.

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

6.

True or False (1 Mark)

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

7.

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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.

8.

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

9.

True or False (1 Mark)

Q. Weight is a vector quantity.

10.

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

11.

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

12.

True or False (1 Mark)

Q. Mass is a vector quantity.

13.

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.

14.

True or False (1 Mark)

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

15.

True or False (1 Mark)

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

16.

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

17.

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

18.

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

19.

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Q. The SI unit of weight is the ……….

20.

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

21.

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

22.

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Q. The CGS unit of weight is the ……….

23.

True or False (1 Mark)

Q. g has maximum value at the equator.

24.

True or False (1 Mark)

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

25.

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