(a) $(\mathrm{\Delta}Q)_{V} = C_{V}\mathrm{\Delta}T = \frac{f}{2}R\mathrm{\Delta}T$ $\Rightarrow \mathrm{\Delta}T \propto \frac{1}{f}$ Also $f_{Mono} < f_{Dia} \Rightarrow (\mathrm{\Delta}T)_{Mono} > (\mathrm{\Delta}T)_{Dia}$
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