Physics - Wave Optics Question with Solution | TestHub

A source of light is placed in front of a screen. The intensity of light on the screen is$I$. Two Polaroids$P_1$and$P_2$are so placed in between the source of light and screen that the intensity of light on the screen is$\frac{I}{2}$. Then the$P_2$, should be rotated by an angle of (degrees) so that the intensity of light on the screen becomes$\frac{3I}{8}$.