set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

A man jumped at a speed of 5 metre per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than that of the man?

a) 2.5 times

b) 4.5 times

c) 5.5 times

d) 10 times

Question : 2

Force is the product of

a) Weight and velocity

b) Mass and acceleration

c) Mass and velocity

d) Weight and acceleration

Question : 3

The force exerted by the floor of an elevator on the foot of a person standing there, is more than his weight, if the elevator is

a) going up and slowing down

b) going up and speeding up

c) going down and slowing down

d) either (a) or (b)

Question : 4

An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil, then

a) is inclined to the horizontal with larger depth at the rear end

b) is inclined to the horizontal with smaller depth at the rear end

c) remains horizontal

d) assumes parabolic curve

Question : 5

Consider the following statements :

1. The objects appear to be more heavy when submerged in water than they are in air.
2. A needle place carefully on the surface of water may float, whereas a ball of the same material will always sink.

a) 1 and 2 both

b) 1 only

c) 2 only

d) None

Question : 6

The potential energy is always the same for an object with the same

a) Acceleration

b) Speed

c) Velocity

d) Position