set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Who among the following anticipated Newton by declaring that all things gravitate to the Earth?

a) Varahamihira

b) Aryabhatta

c) Buddhagupta

d) Brahmagupta

Question : 2

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

Question : 3

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 : 4

The mass of a body on the Earth is 100 kg (acceleration due to gravity, $g_e = 10 m/s^2$). If acceleration due to gravity on the Moon is ($g_e = 106 m/s^2$), then the mass of the body on the Moon is

a) 60 kg

b) 100/6 kg

c) 100 kg

d) 600 kg

Question : 5

The time period of a pendulum

a) Depends on its length

b) Depends on the mass

c) Depends on time

d) Depends on temperature

Question : 6

A smooth plane inclined at an angle q with the horizontal as shown in the given figure. A body starts from rest and slides down on the inclined surface. The time taken by the body to reach the bottom is

a) $√{2l}/g$

b) $√{2h}/g$

c) $1/{sinϴ}√{{2h}/g}$

d) $sinϴ√{2h}/g$