A lead bullet penetrates into a solid object and melts. Assuming that 40 of its kinetic energy is used to heat it, the initial speed of bullet is
(Given, initial temperature of the bullet =127∘C,
Melting point of the bullet =327∘C,
Latent heat of fusion of lead =2.5×104Jkg−1,
Specific heat capacity of lead =125JkgK−1)
Held on 27 Jun 2022 · Verified 6 Jul 2026.
125ms−1
500ms−1
250ms−1
600ms−1
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