set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

A man is at rest in the middle of a horizontal plane of perfectly smooth surface of ice. He can move himself to the shore by making use of Newton’s

a) third law of motion

b) second law of motion

c) first law of motion

d) first, second and third laws of motion

Question : 2

There is no atmosphere on the moon because

a) escape velocity of gas molecules is greater than their root mean square velocity.

b) it is too for from the sun and has very low pressure in its outer surface.

c) it is closer to the earth and also it has the inactive inert gases in it.

d) escape velocity of gas molecules is less than their root mean square velocity.

Question : 3

Consider the following statements :

1. A body can have constant velocity and still have varying speed.
2. A body falls freely from a height with uniform acceleration.

a) 1 and 2 both

b) 1 only

c) 2 only

d) None

Question : 4

Match the Column I and Column II.

a) A-Q; B-P; C-T; D-S; E-R

b) A-Q; B-P; C-T; D-T; E-S

c) A-P; B-Q; C-T; D-R; E-S

d) A-Q; B-P; C-T; D-R; E-S

Question : 5

The work done becomes zero if

a) force acting on the body is zero

b) displacement is zero

c) force perpendicular to the displacement

d) All of the above

Question : 6

Watt–hour meter measures

a) power

b) voltage

c) current

d) electric energy