Question

Two liquids A and B of equal volumes have their specific heats in the ratio 2 : 3. If they have same thermal capacity, then the ratio of their densities is

• A. 1 : 1
• B. 2 : 3
• C. 3 : 2
• D. 5 : 6

Answer 1

Answer: (C)

3 : 2

Thermal capacity$=$mass$\times$ specific heat
Given both the liquids have same volume and same thermal capacity.
$m_1.c_1=m_2.c_2$
${\rho }_1.c_1={\rho }_2.c_2$
$\frac{{\rho }_1}{{\rho }_2}=\frac{c_2}{c_1}=3/2$
Option C.