Gravitational Force MCQ question and answer with solution

1

The height of a geo-stationary satellite from the Earth's surface is approximately

A) 36000 km B) 42000 km C) 30000 km D) None of these

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Answer & Solution

Answer: Option A

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2

What is the earth's escape velocity?

A) 2.8 km/s B) 5.6 km/s C) 11.2 km/s D) 14 km/s

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Answer & Solution

Answer: Option C

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3

Which one of the following is not true about Kepler's rules for planetary bodies?

A) The orbit of a planet is an elliptical with the Sun at one of the two foci B) A line segment connecting a planet and the sun makes an equal area outside during equal intervals of time C) The square of its orbital period is proportional to the cube of the semi-principal axis of its orbit D) The orbital period depends on the mass of the planet

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Answer & Solution

Answer: Option D

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4

A pendulum clock can run faster in

A) Summer B) Winter C) Spring season D) Rainy season

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Answer & Solution

Answer: Option B

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5

There is no atmosphere on the moon because

A) it is near to the earth B) it receives light from the sun C) it revolves around the earth D) the escape velocity of gas molecules on it is less than the root mean square velocity here

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Answer & Solution

Answer: Option D

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6

If an apple is released from an orbiting spaceship, it will

A) Fall towards the Earth B) Move at a lower speed C) Move along with the spaceship at the same speed D) Move at a higher speed

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Answer & Solution

Answer: Option C

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7

Who defined the law of gravitation?

A) Newton B) Archimedes C) Galileo D) Faraday

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Answer & Solution

Answer: Option A

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8

The centre of gravity of a sprinter during the race lies

A) ahead of his feet B) behind his feet C) at the centre of the body D) to the left side of the body

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Answer & Solution

Answer: Option A

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9

An object is thrown above the initial velocity u and reaches a maximum height of 'h'. Find the value of 'h':

A) $$\frac{{{u^2}}}{{2g}}$$ B) $$\frac{u}{{2g}}$$ C) 2ug D) None of these

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Answer & Solution

Answer: Option A

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10

Suppose an imaginary planet whose mass is equal to half of the earth and radius is onethird. If the acceleration due to gravity on the Earth's surface is g, then what will be the acceleration due to gravity on that planet?

A) $$\left( {\frac{1}{2}} \right)g$$ B) $$\left( {\frac{9}{2}} \right)g$$ C) $$\left( {\frac{5}{2}} \right)g$$ D) $$\left( {\frac{3}{2}} \right)g$$

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Answer & Solution

Answer: Option B

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Gravitational Force MCQ question and answer with solution | Physics Gk MCQs