Question

The density of a substande is 400 kgm and that of another substance is 600 kgm. The heat capacity of 40 c.c of first substance is equal to that of 30 c.c of second substance. The ratio of their specific heats is ?
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Answer 1

Answer:

9:8

Explanation:

Heat Capacity=mass×specific heat

HC1 / HC2 = m1 . c1 / m2 . c2

Given heat capacities are equal

m1 . c1 / m2 . c2 = 1

c1 / c2 = m2 /m1

=(ρV)2 / (ρV)1

= 600 / 400 × 30 / 40

= 9 / 8