set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

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 : 3

Who propounded the universal law of gravitation?

a) Galileo

b) Newton

c) Copernicus

d) Einstein

Question : 4

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 : 5

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

Question : 6

Consider the following statements. A Simple Pendulum is set into oscillation. Then,

1. the acceleration is zero when the bob passes through the mean position.
2. in each cycle the bob attains a given velocity twice.
3. both acceleration and velocity of the bob are zero when it reaches its extreme position during the oscillation.
4. the amplitude of oscillation of the simple pendulum decreases with time.

a) 3 and 4

b) 1 and 2

c) 1, 2 and 4

d) 2, 3 and 4