38.A substance of mass M kg requires input of P watts to remain in the molten state at its molten state at its melting point when the power is turned off, the sample completely solidifies in time t sec . What is the latent heat of fission of the substance?

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Q. A substance of mass m kg requires a power input of P watts to remain in the molten state at its melting point. When the power is turned off, the sample completely solidifies in time t second. What is the latent heat of fusion of the substance?

A substance of mass m kg requires a power input of P watts to remain in the molten state at its melting point. When the power is turned off, the sample completely solidifies in time t sec. What is the latent heat of fusion of the substance

A substance of mass M kg requires an input power P to keep it in molten state. If the latent heat of fusion of substance is L, then how long will it take to solidify it completely?

M

kilograms of a material are to be kept in melted state at melting point and power required for this purpose is

P

. When power source is disconnected then the sample completely solidifies in

t

sec. The latent heat of fusion of the material will be :

Q. The quantity of heat required to change the unit mass of a substance from solid state to liquid state at its melting point is known as ______.

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