Grade 12General Physics
A lead bullet at 27°c just melts when stopped by an obstacle. Assuming that 25% of heat is absorbed by the obstacle,then the velocity of the bullet at the time of striking- ( M.P.of lead=327°c specific heat of lead=0.03cal/gm/°c, latent heat of fusion of lead =6cal/gm and J=4.2 joule/cal)1) 410 m/sec2) 1230m/sec3) 307.5m/sec4) none of these
A lead bullet at 27°c just melts when stopped by an obstacle. Assuming that 25% of heat is absorbed by the obstacle,then the velocity of the bullet at the time of striking- ( M.P.of lead=327°c specific heat of lead=0.03cal/gm/°c, latent heat of fusion of lead =6cal/gm and J=4.2 joule/cal)
1) 410 m/sec
2) 1230m/sec
3) 307.5m/sec
4) none of these
