A piece of ice falls from a height h so that it melts completely. Only one — quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 105 J/kg and g = 10 N/kg]
A. 136 km
B. 68km
C. 34km
D. 544km
Answer:A
A piece of ice falls from a height h so that it melts completely. Only one — quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is [Latent heat of ice is 3.4 × 105 J/kg and g = 10 N/kg]
A. 136 km B. 68km C. 34km D. 544km