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Calorimeter

What is the l...

Question

What is the latent heat of fusion?

35 k J/kg

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70 k J/kg

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25 k J/kg

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30 k J/kg

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Solution

The correct option is D 30 k J/kg
During fusion temperature remains constant that is T=10, So heat supplied at T=10 is latent heat of fusion.
For fusion, $Q = 10 \times (2.5 - 1) = 0.5 \times L$
So, $L = 30 k J / k g$

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