Photons absorbed in matter are converted to heat , A source emitting n photons/ sec of frequency $\gamma$ is used to convert $1 kg$ of ice at $ 0^{\circ}C$ to water at $ 0^{\circ}C$ . Then , the time taken for the conversion .

Question

$\begin{array}{1 1} \text{decreases with increasing n, with } \gamma\; \text{fixed} \\ \text{decreases with increasing n fixed } \gamma\; \text{increasing} \\ \text{remains constant with n and $\alpha$ changing such } n \gamma = constant \\ \text{increases when the product} n\; \gamma \;increases \end{array} $