Physics · Wave Optics
Two linear polarizers are placed coaxially with the transmission axis of the first polarizer in the vertical orientation and the second polarizer in the horizontal orientation. A half-wave plate placed coaxially between these crossed polarizers is rotating about its axis at an angular frequency ω. At t = 0, the fast axis of the half-wave plate was oriented vertically. A beam of unpolarized light of intensity I0 is incident along the axis of this optical system. The output intensity measured by a detector after the beam passes through this optical system is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1I04 [1 + cos(ωt)]
- 2I04 [1 - cos(2ωt)]
- 3I04 [1 - cos(4ωt)]✓
- 4I02 [1 - cos(ωt)]
Correct answer
I04 [1 - cos(4ωt)]
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