Gravitational Force MCQ question and answer with solution

61

Suppose a planet whose mass and radius is one-third of the mass and radius of the Earth. If the value of acceleration due to gravity on Earth is g, then its value on the planet will be . . . . . . . .

A) $$\frac{1}{9}g$$ B) 9g C) $$\frac{1}{3}g$$ D) 3g

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Answer & Solution

Answer: Option D

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62

If a person sitting in a lift, then when will he feel that his weight gets increased?

A) When the elevator going upward expeditiously B) When the elevator going down expeditiously C) Going upward with constant velocity D) Going downward with constant velocity

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Answer & Solution

Answer: Option A

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63

How long does a geostationary satellite take to complete the revolution of an orbit at 35786 km altitude-

A) 30 hours B) 24 hours C) 36 hours D) 12 hours

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Answer & Solution

Answer: Option B

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64

Which of the following among is a weak force?

A) momentum force B) gravitational force C) mass D) short range force

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Answer & Solution

Answer: Option B

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65

The acceleration due to gravity of a destructive Earthquake will be

A) >550 cm/s² B) >750 cm/s² C) >950 cm/s² D) >980 cm/s²

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Answer & Solution

Answer: Option D

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66

A batsman hits a cricket ball which then rolls on a level ground. After covering a short distance, the ball comes to rest. The ball slows to a stop because

A) The batsman did not hit the ball hard enough B) Velocity is proportional to the force exerted on the ball C) There is a force on the ball opposing the motion D) There is no unbalanced force on the ball, so the ball would try to come to rest

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Answer & Solution

Answer: Option C

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67

A satellite in vacuum

A) is kept in orbit by remote control B) is kept in orbit by retro-rocket C) derives energy from gravitational field D) does not require any energy for orbiting

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Answer & Solution

Answer: Option D

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68

A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions, do both reach the surface Simultaneously?

A) They must have the same volume B) They must have the same density C) They must have the same mass D) They must be dropped in vacuum

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Answer & Solution

Answer: Option D

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69

If the mass of two objects is tripled then the force between the two objects will be:

A) force will be two times B) force will remain same C) force will be nine times D) force will be three times

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Answer & Solution

Answer: Option C

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70

A smooth plane inclined at an angle θ with the horizontal as shown in the given figure. A body starts from rest and slides down on the inclined surface. The time taken by the body to reach the bottom is
Gravitational Force mcq question image

A) $$\frac{{\sqrt {2h} }}{g}$$ B) $$\sqrt {\frac{{2l}}{g}} $$ C) $$\frac{1}{{\sin \theta }}\sqrt {\frac{{2h}}{g}} $$ D) $$\sin \theta \frac{{\sqrt {2h} }}{g}$$

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Answer & Solution

Answer: Option C

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