set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Assertion (A):
The weight of human being on the Moon is1/6 in comparison to Earth.
Reason (R):
The Moon does not have gravity like Earth.
Select the answer from following codes.

a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

b) Both (A) and (R) are true and (R) is the correct explanation of (A)

c) (A) is true, but (R) is false

d) (A) is false, but (R) is true

Question : 2

Who propounded the universal law of gravitation?

a) Galileo

b) Newton

c) Copernicus

d) Einstein

Question : 3

Weightlessness is

a) When gravity decrease

b) Zero gravity

c) In vacuum

d) None of the above

Question : 4

Which of the following pairs is correctly matched?

a) 2 3 4 1

b) 2 1 4 3

c) 3 4 1 2

d) 4 1 2 3

Question : 5

A ball is dropped from the top of a high building with a constant acceleration of 9.8 m/$s^2$. What will be its velocity after 3 s?

a) 19.6 m/s

b) 9.8 m/s

c) 29.4 m/s

d) 39.2 m/s

Question : 6

The weight of human body is

a) Same at every place on the Earth’s surface

b) Maximum at the poles

c) Maximum at the equator

d) More on the mountains than planes