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QNEET-2016-Ph-1071: NEET 2016 Physics - Class 11 NEET-2016-Ph-1071 Solution: A piece of ice falls from a height h so that it melts…
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 [Latent heat of ice is and g = 10 N/Kg] 136 km 68 km 34 km 544 km
Multiple Choice Options
- A 136 km
- B 68 km
- C 34 km
- D 544 km
Step-by-Step Verified Solution
Energy gained by the ice during its fall E = mgh
As, m g h 4 = m L f
h = m L f _ 4 m g = L f _ 4 g
= 3.4 _ 10 5 _ 4 10 = 136000 m = 136 k m