The re are two types of latent heat.
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Latent heat of Fusion— the amount of heat energy supplied to a solid at its melting point, such that its state changes without any change in its temperature.
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Latent Heat of Fusion— the amount of heat energy supplied to liquid at its boiling point, such that its state changes without any rise in its temperature.
How can both be latent heat of fusion?
Actuli it is
a spelling mistake one is Latent heat of Fusion & the other is the Latent heat of Vapourisation