Three polaroid sheets are kept parallel to each other such that first and last are crossed. Unpolarised…
Three polaroid sheets are kept parallel to each other such that first and last are crossed. Unpolarised light of intensity $32 \mathrm{Wm}^{-2}$ falls normally on the first sheet and passes through all the polaroid sheets. If the intensity of the emerging light from the third sheet is $3 \mathrm{Wm}^{-2}$, then the angle between the axes of the first two polaroid sheets is