Q. A bullet of mass $M$ hits a block of mass $M^{'}$ . The transfer of energy is maximum, when

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A

$M^{'}=M$

B

$M^{'}=2M$

C

$M^{'}\llM$

D

$M^{'}\ggM$

Solution:

If $M=M'$ then bullet will transfer the whole of its velocity (and consequently $100\%$ of its KE) to block and will itself come to rest as per the theory of collision.

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