Heat and Thermal ExpansionHard

Question

Two substance A and B of equal mass m are heated by uniform rate of 6 cal s-1 similar conditions. A graph between temperature and time  is shown in  figure. Ratio  of heat absorbed HA / HB by them for complate fusion is : -

Options

A.
B.
C.
D.

Solution

HA = (6 cal /s) × (6 - 2) s
HB = (6cal/s) × (6.5 -4)s
∴

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