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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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1998
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Q)
A lead bullet of mass 21g travelling at a speed of $100 \; m/s$ comes to rest in a wooden block. If no heat is taken away by the wood, the rise in temperature of the bullet in the wood nearly is (sp. heat of lead = $30 cal/kg^{\circ}C $) :
( A ) $33^{\circ}C$
( B ) $39^{\circ}C$
( C ) $25^{\circ}C$
( D ) $28^{\circ}C$
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