set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Weightlessness is

a) When gravity decrease

b) Zero gravity

c) In vacuum

d) None of the above

Question : 2

A pendulum clock can run faster in

a) Winter

b) Summer

c) Spring season

d) Rainy season

Question : 3

The Leaning Tower of Pisa does not fall because

a) It covers a large base area

b) It is tapered at the top

c) Its centre of gravity remains at the lowest position

d) The vertical line through the centre of gravity of the tower falls within its base

Question : 4

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 : 5

If pieces of equal size of woods, wax and iron falling from a same height, which one will reach the surface of the Earth first?

a) Wax

b) Wood

c) Iron

d) Reach at the same time

Question : 6

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