First slide

Thermal expansion

Question

Density of a liquid 'A' is 0.5 g/c.c and that of liquid 'B' is 0.6 g/c.c. Heat capacity of 8 litres of ‘A’ is equal to that of 10 litres of 'B'. Then their specific heats ratio is

Easy

A

4 : 5
B

3 : 2
C

2 : 3
D

1 : 1

Solution

v₁ρ₁s₁ = v₂ρ₂s₂ ⇒ 8(0.5)(s₁) = 10 (0.6)(s₂)
s₁ : s₂ = 3 : 2

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