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Class 11
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Physics
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Work, Energy and Power
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Easy Questions
Work Energy And Power
Physics
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JEE Mains
NEET
Easy Qs
Med Qs
Hard Qs
>
The collision in which the relative velocity is zero after collision is
A
perfectly elastic
B
perfectly inelastic
C
partially elastic
D
sometimes elastic and sometimes inelastic
Easy
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>
Complete the following sentence:
The potential energy of a body is the energy by virtue of its _______ .
A
motion
B
position
C
Both A and B
D
None of these
Easy
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>
A lighter body moving with a velocity
v
collides with a heavier body at rest. Then :
A
the lighter body rebounces with twice the velocity of bigger body
B
the lighter body retraces its path with the same velocity in magnitude
C
the heavier body does not move practically
D
both (2) and (3)
Easy
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>
The K.E. of a body can be increased maximum by doubling its:
A
mass
B
weight
C
speed
D
density
Easy
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>
In a perfectly elastic collision :
A
both KE and momentum are conserved.
B
only KE is covered.
C
only momentum is covered.
D
neither KE nor momentum are conserved.
Easy
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>
In SI system, the unit of P.E. is :
A
erg
B
dyne-cm
C
joule
D
none of these
Easy
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>
Name the type of energy (kinetic energy
K
or potential energy
U
) possessed in a compressed spring:
A
U
B
K
C
Both
U
and
K
D
None
Easy
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>
Energy equals of a mass of one microgram in kilo joules is
A
9
×
1
0
7
k
J
B
1
0
×
1
0
3
k
J
C
8
×
1
0
2
k
J
D
7
×
1
0
4
k
J
Easy
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>
A body
P
moving with a velocity of
2
0
ms
−
1
collides with another body
Q
of same mass at rest. After collision
P
comes to rest. What is the velocity of the body
Q
?
A
1
0
ms
−
1
B
2
0
ms
−
1
C
3
0
ms
−
1
D
5
ms
−
1
Easy
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>
Complete the following sentence:
The kinetic energy of a body is the energy by virtue of its______ .
A
force
B
motion
C
roughness
D
all the above
Easy
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>