A bullet of lead melts when stopped by obstacle. Assuming that 25 per cent of the heat is absorbed
Channel: Doubtnut
Date: 2020-08-30

A bullet of lead melts when stopped by obstacle. Assuming that 25 per cent of the heat is absorbed by the osbtacle, find the velocity of the bullet if its initial temperature is `27^(@)C`. (Melting point of lead `327^(@)C`, specific heat capacity of lead `=30 cal kg^(-1)K^(-1)` specific latent heat of fusion of lead `=6000 cal kg^(-1)` and `J=4.2` joules `cal^(-1)`)