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A piece of ice falls from a height h so ...

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 heal during its fall. The value of h is [Latent heat of ice is `3.4 xx 10^5 J/kg` and g=10 N/kg`]

A

136 km

B

68 km

C

34 km

D

544 km

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TARGET PUBLICATION-Thermal Properties of Matter-Exercise
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