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Physics:10 Hard Multiple Choice Questions

The students who have interest in the subject of physics or those aspirants whop are preparing for higher level exams , will certainly like the quiz on physics where the selection of questions , in multiple choice form , is out of  hard questions.

10 Hard Questions on Physics- Multiple Choice !

Physics-Hard 2

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Question 1
Impulse is: I.the total effect of a force II. the product of average force and time for which the force acts III. equal to the total change in momentumWhich combination is false?                      
A
I only
B
II only
C
III only
D
none of these
Question 2
Which combination of the following statements is wrong?  I. A body can have a constant speed but a varying velocity. II. A body can have a constant velocity but a varying speed. III. A body can have a zero velocity and finite accelertation.
A
I only
B
II only
C
III only
D
None of these
Question 3
What is not true about momentum ? 
A
It is the product of the mass and the velocity of the body.
B
It is a vector quantity whose direction is same as that of the velocity.
C
Its physical dimension is MLT-2
D
Its S.I. unit is kilogram metre per second.
Question 4
Think about the following statements about momentum: I. The rate at which momentum changes is equal to the force applied. II. The mass of the particle times its acceleration is equal to the rate of change of its momentum. III. The change of momentum of a body is equal to the lmpulse applied on it. Which combination is wrong? 
A
II only
B
III only
C
I, II and III
D
none of these
Question 5
In which of the following cases the level of liquid increases when a piece of ice melts completely ? 
A
A piece of cork is embedded inside an ice block which floats in water.
B
A piece of ice floats in water.
C
A piece of ice floats in a liquid of specific gravity 1. 2.
D
A piece of ice sinks in a liquid of specific gravity 0.7.
Question 6
Which of the following is not the fundamental force of nature? 
A
weak nuclear force
B
strong nuclear interaction
C
cohesive force
D
electromagnetic force
Question 7
A fictitious outward force on a particle rotating about an axis is :
A
centrifugal force
B
centripetal force
C
tangential force
D
Coriolis force
Question 8
The separation of cream during the churning of milk is due to:
A
centrifugal force
B
centripetal force
C
frictional force
D
viscous drag
Question 9
Which is not the unit of force among the following ? 
A
dyne
B
Newton
C
pound
D
kilogram-weight
Question 10
'Weight' of a body may have the following attributes: I. it is the gravitational force acting on a body at the earth's surface. II. it is independent of the mass of the body. III. The body is weightless during the free fall. IV . It is different at different places on earth's surface. Which combination is correct ? 
A
I and III only
B
I, III and IV only
C
I, II and III only
D
I, II, III and IV
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There are 10 questions to complete.