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Q. 58

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 903

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Short Answer

Unpolarized light of intensity is incident on a stack of polarizing filters, each with its axis rotated with respect to the previous filter. What light intensity emerges from the last filter?

The light of filter emerges from the last filter is .

See the step by step solution

Step by Step Solution

Step 1: Definition of Electromagnetic fields and Waves:

Electromagnetic waves, or EM waves, are waves that are formed when an electric field and a magnetic field vibrate together. EM waves, in other words, are made up of oscillating magnetic and electric fields.

Step 2: Definition of Light of Intensity:

The strength or amount of light produced by a certain lighting source is referred to as light intensity. It is a measurement of a light source's wavelength-weighted power.

Step 3: We have to find value of intensity emerges from last filters:

Step 4: Substitute values in equation:

Step 5: Next substitution in equation :

Step 6: Next:

Step 7: Substitution:

Step 8: Finally, we calculate for :

Step 9: Final result:

The result for the light of intensity is incident on a stack of polarizing filters and each axis rotated from previous filter to last filter is .

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