3(iv)
Thermal capacities of substances A and B are same. If mass of A is more than mass of B then:
(a) Which substance will have more specific heat capacity?
(b) Which substance will show greater rise in temperature if the same amount of heat is supplied to both?
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(a) B will have more specific heat capacity.
Reason —
$$\begin{aligned}\text{Specific heat capacity (c)} = \frac{\text{Heat Capacity of body (C')}}{\text{mass of body (m)}} \\[1em] \therefore \text{Specific heat capacity (c)} ∝ \frac{1}{\text{mass}}\end{aligned}$$
∴ Specific heat capacity of B will be more as its mass is less.
(b) Both substances will show equal rise in temperature as their thermal capacities are the same.