question_answer

If the sun rays are incidenting at \[60{}^\circ \] angle and intensity is I. If the sun rays are made incident at \[30{}^\circ \] angle, then what will be the intensity?

A)  \[\frac{l}{\sqrt{3}}\]                      

B)         \[\sqrt{3}l\]

C)  \[3l\]                   

D)         \[\frac{l}{3}\]