Polarization Filters Video Lessons

Concept

Problem: Unpolarized light with intensity 350 W/m2 passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 126 W/m2.What is the angle from vertical of the axis of the second polarizing filter?Express your answer to two significant figures and include the appropriate units.

FREE Expert Solution

In this problem, we are polarizing light. We'll need Malus law which relates the intensity of the light to the angle between two polarizers.

Malus law:

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Problem Details

Unpolarized light with intensity 350 W/m2 passes first through a polarizing filter with its axis vertical, then through a second polarizing filter. It emerges from the second filter with intensity 126 W/m2.

What is the angle from vertical of the axis of the second polarizing filter?
Express your answer to two significant figures and include the appropriate units.