Properties Of Solids And Liquids Question 106
Question: 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 [IIT JEE 1992]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: B
Solution:
Heat lost in t sec = mL or heat lost per sec =
This must be the heat supplied for keeping the substance in molten state per sec.
