Question

What  is  Latent  Heat  of  Fusion?

Answer 1

The specific latent heat of fusion : is the heat needed to transform mass of 1 kg of a substance into it's liquid phase at the same temperature is called to be as latent heat of fusion . 

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Answer 2

Latent heat of fusion is the heat needed to change a mass of 1 kg substance from a solid at its melting point into liquid at the same temperature.