set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Who propounded the universal law of gravitation?

a) Galileo

b) Newton

c) Copernicus

d) Einstein

Question : 2

Weightlessness is

a) When gravity decrease

b) Zero gravity

c) In vacuum

d) None of the above

Question : 3

A pendulum clock can run faster in

a) Winter

b) Summer

c) Spring season

d) Rainy season

Question : 4

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 : 5

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 : 6

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