Physics · Optics
Three polarizers are stacked normal to a central axis along which an unpolarized light beam of intensity I0 is incident. The first and third polarizers are perpendicular to each other, and the middle polarizer is rotated at a constant angular frequency ω about the central axis. The time-dependent intensity I(t) of light emerging after the third polarizer is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1I(t) = (I0/16){1 - cos(4ωt)}✓
- 2I(t) = (I0/8){1 - cos(2ωt)}
- 3I(t) = (I0/4){1 - 2cos(ωt)}
- 4I(t) = (I0/2)cos2(ωt)
Correct answer
I(t) = (I0/16){1 - cos(4ωt)}
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