Elastic and Inelastic Collisions in One and Two Dimensions NEET Questions

Physics - Work, Energy, and Power

Elastic and Inelastic Collisions in One and Two Dimensions MCQ Questions


1.
Which of the following is conserved in both elastic and inelastic collisions?
A.
Momentum only
B.
Kinetic energy only
C.
Both momentum and kinetic energy
D.
Neither momentum nor kinetic energy
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ANSWER :
A. Momentum only
2.
In an elastic collision, which of the following remains unchanged?
A.
Momentum
B.
Kinetic energy
C.
Total energy
D.
Neither momentum nor energy
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ANSWER :
A. Momentum
3.
In an inelastic collision, the total kinetic energy of the system:
A.
Is always conserved
B.
Is always increasing
C.
May be conserved or lost
D.
Is always lost
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ANSWER :
D. Is always lost
4.
A completely inelastic collision is characterized by:
A.
Objects bouncing apart
B.
No sound or heat produced
C.
No deformation
D.
Objects moving together
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ANSWER :
D. Objects moving together
5.
Body A of mass 4m moving with speed uuu collides elastically and head-on with another body B of mass 2m at rest. The fraction of energy lost by the colliding body A is:

NEET - 2019

A.
2/3
B.
1/3
C.
8/9
D.
4/9
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ANSWER :
B. 1/3
6.
If two bodies stick together after collision, the collision is:
A.
Elastic
B.
Elastic
C.
Partially inelastic
D.
Completely inelastic
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ANSWER :
D. Completely inelastic