set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

A Geosynchronous satellite continuously active in its orbit due to centrifugal force which is obtained by

a) The gravitational force on the satellite by the Earth

b) The rocket engine that propelled the satellite

c) The gravitational force on the satellite by the Sun

d) The gravitational force on the Earth by satellite

Question : 3

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

a) Varahamihira

b) Aryabhatta

c) Buddhagupta

d) Brahmagupta

Question : 4

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) $sinϴ√{2h}/g$

Question : 5

There is no atmosphere on the Moon because

a) It receives light from the Sun

b) It is near to the Earth

c) It revolves around the Earth

d) The escape velocity of gas molecules on it is less than the root mean square velocity here

Question : 6

Who gave the theory of gravity?

a) Charles Babbage

b) Charles Newton

c) Isaac Newton

d) John Adams