Question

The densities of two substances are in the ratio 5 :6 and the specific heats are in the ratio 3 :5 respectively The ratio of their thermal
capacities per unit volume is
(A) 21
(B) 12.
(C) 41
(D) 14​

Answer 1

Answer:

The ratio of Thermal Capacities = 1 : 2

Explanation:

Thermal Capacity = Specific Heat × Mass

Mass=Density × Volume.

Thermal capacities per unit volume,

T = Density (ρ) × Specific Heat (C)

Ratio is,

T₁/T₂ = ρ₁C₁/ρ₂C₂ = $\frac{5\times3}{6\times5}$ = $\frac{15}{30}$

∴ Ratio = 15 : 30 = 1 : 2