JEE Main 20264 Apr, Evening shiftPhysicsMediumOptics190× since 2002
An unpolarized light of certain intensity passes through a combination of two polarizers whose transmission axes are at and , respectively, with respect to the horizontal axis. A third polarizer with its transmission axis at with the horizontal axis is placed between the two existing polarizers. The ratio of the output intensities with and without the third polarizer is ______.