NEET Exam Model Paper 5

A lead shot of mass ‘m’ is placed at the bottom of a vertical card board cylinder of length 1.5m. The cylinder is closed at bits ends. The cylinder is suddenly inverted so that the shot falls by 1.5m. If the process is repeated quickly 100 times, and assuming no heat is lost to the surroundings, then the increase in temperature of the lead shot is nearly (C = 0.03 cal/gm/°C)