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Q.

In the explosion of a cracker/bomb


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a

Kinetic energy is produced

b

Momentum is conserved

c

Internal energy is absorbed

d

Momentum remains un-conserved 

answer is B.

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Detailed Solution

Explosion caused by the cracker or bomb is given by momentum is conserved.
The particles' total momentum is actually redistributed as a result of the explosion. Internal forces cause the cracker to blow up. As a result, the momentum will not change. The total momentum after the explosion will be equal to zero because it is initially at rest. As a result, different parts will move in opposite directions at different speeds.
 
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In the explosion of a cracker/bomb