set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

Watt–hour meter measures

a) power

b) voltage

c) current

d) electric energy

Question : 2

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 : 3

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 : 4

Which one of the following physical quantities is represented by the shaded area in the given graph?

a) Power

b) Impulse

c) Torque

d) Work done

Question : 5

A gymnast takes turns with her arms and legs stretched. When she pulls her arms and legs

a) the angular velocity stays constant

b) the moment of inertia decreases

c) the angular velocity decreases

d) the angular momentum increases

Question : 6

It is difficult to walk on the ice than on the road because

a) Ice does not offer any reaction when we push it with our foot

b) Road is harder than the ice

c) Ice is harder than the road

d) Ice has a lesser friction than the road