When photons of wavelength $\lambda_1$ are incident on an isolated sphere, the corresponding stopping potential is found to be V. When photons of wavelength $\lambda_2$ are used, the corresponding stopping potential was thrice that of the above value. If light of wavelength $\lambda_3$ is used then find the stopping potential for this case :

Question

$\begin{array}{1 1}(1) \large\frac{hc}{e} \bigg[ \frac{1}{\lambda_3}-\frac{1}{\lambda_2} -\frac{1}{\lambda_1} \bigg] \\ (2) \large\frac{hc}{e} \bigg[ \frac{1}{\lambda_3}+\frac{1}{\lambda_2} -\frac{1}{\lambda_1} \bigg] \\ (3) \large\frac{hc}{e} \bigg[ \frac{1}{\lambda_3}+\frac{1}{2 \lambda_2 } -\frac{3}{2 \lambda_1} \bigg] \\ (4) \large\frac{hc}{e} \bigg[ \frac{1}{\lambda_3}-\frac{1}{2\lambda_2} -\frac{1}{\lambda_1} \bigg] \end{array} $