The ratio of the densities of the two bodies is `3:4` and the ratio of specific heats is `4:3` Find the ratio of their thermal capacities for unit volume?

Explanation

To find the ratio of the thermal capacities for unit volume of two bodies given the ratios of their densities and specific heats, we can follow these steps:

### Step 1: Understand the Definitions
Thermal capacity (C) is defined as the product of mass (m) and specific heat capacity (c). For unit volume, we can express thermal capacity as:
\[ C' = \text{Density} (\rho) \times \text{Specific Heat} (c) \]

### Step 2: Set Up the Ratios
Let:
...