Gravitational Force MCQ question and answer with solution

41

If the gravitational force of the Earth suddenly disappears, which are of the following will be the correct consequence?

A) The weight of an object will become zero but the mass will remain the same B) The mass of the object will become zero but the weight will remain the same C) Both the mass and the weight of the object will become zero D) The mass of the object will increase

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Answer & Solution

Answer: Option A

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42

Mass of a particular amount of substance
1. is the amount of matter present in it.
2. does not vary from place to place.
3. changes with change in gravitational force.
Select the correct answer:

A) 1, 2 and 3 B) 1 and 2 C) 2 and 3 D) Only 1

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Answer & Solution

Answer: Option B

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43

Astronauts in space cannot stand erect. This is because, in space

A) There is no gravity B) Viscous forces of the atmosphere are very strong C) Solar wind exert an upward force D) Atmospheric pressure is very low

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Answer & Solution

Answer: Option A

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44

The mass of a body at the centre of the Earth is

A) less than at the surface B) remains constant C) more than at the surface D) zero

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Answer & Solution

Answer: Option B

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45

In respect of the difference of the gravitational force from electric and magnetic forces, which one of the following statements is true?

A) Gravitational forces is stronger than the other two B) Gravitational force is attractive only, whereas the electric and the magnetic forces are attractive as well as repulsive C) Gravitational force has a very short range D) Gravitational force is a long range force, while the other two are short range forces

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Answer & Solution

Answer: Option B

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46

A ball thrown vertically upward returns to the ground in 13.5 seconds. At what speed was he thrown. (g = 10ms^-2)

A) 67.5 m/s B) 13.5 m/s C) 10 m/s D) 135 m/s

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Answer & Solution

Answer: Option A

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47

Which of the two statements given by A and B is/are true? What is the force of gravitational:
A. Is directly proportional to the multiplication of the mass of two objects.
B. Is directly proportional to the square of the distance between to objects.

A) Only B is true while A is false B) Both A and B are untrue C) Only A is true while B is false D) Both A and B are true

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Answer & Solution

Answer: Option C

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48

What is called the force of attraction between any two physical objects?

A) friction force B) gravitational force C) centripetal force D) mechanical force

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Answer & Solution

Answer: Option B

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49

Each object of the universe attracts another object by a force is proportional to . . . . . . . .

A) product of their heights B) product of their volumes C) product of their masses D) product of their energies

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Answer & Solution

Answer: Option C

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50

Which of the following is incorrect statement-

A) Gravitational acceleration (g) does not depend on the form, shape and mass of the body B) Gravitational acceleration (g) is maximum at the poles C) Gravitational acceleration (g) is minimum at the equator D) If the lift is moving upwards with an acceleration, the virtual weight of a body is less than its actual weight

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Answer & Solution

Answer: Option D

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