JEE Main 2014 Physics question
Two beams, A and B, of plane polarized light with mutually perpendicular planes of polarization are seen through a Polaroid. From the position when the beam A has maximum intensity (and beam B has zero intensity), a rotation of Polaroid through 30° makes the two beams appear equally bright. If the initial intensities of the two beams are and respectively, then equals -
Answer: (C)
Solution
After rotating by 30°, A makes 30° and B makes 60° with the transmission axis. Malus's law:
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account