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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]
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- 34 km
- 544 km
- 136 km
- 68 km
Correct Option: C
According to question only one-quarter of the heat produced by falling piece of ice is absorbed in the melting of ice.
| i.e., | = mL | |
| 4 |
| ⇒ h = | = | = 136 km. | ||
| g | 10 |
