Two monochromatic beams A and B of equal intensity I , hit a screen . The number of photons hitting the screen by beam A is twice that by beam B. Then What inference can you make about their frequencies ?

Question

$\begin{array}{1 1} \text{ Frequency of beam A is twice of beam B} \\ \text{ Frequency of beam B is twice of beam A} \\ \text{ Frequency of beam A is = Frequency of beam B} \\ \text{ Frequency of beam B } = \frac{1}{2} \text{Frequency of beam A} \end{array} $