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Physics
Assertion: KE is conserved at every instant of elastic collision. Reason: No deformation of matter occurs in elastic collision.
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Q.
Assertion :
$KE$ is conserved at every instant of elastic collision.
Reason :
No deformation of matter occurs in elastic collision.
AIIMS
AIIMS 2011
Work, Energy and Power
A
If both assertion and reason are true and reason is the correct explanation of assertion.
29%
B
If both assertion and reason are true but reason is not the correct explanation of assertion.
42%
C
If assertion is true but reason is false.
18%
D
If both assertion and reason are false.
11%
Solution:
Kinetic energy is not conserved at every instant of elastic collision because there will be friction and deformation losses of energy.