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13-11-2022
Physics

Answered

Two disks of Polaroid are aligned so that they polarize light in the same plane.
2. Calculate the angle through which one sheet needs to be turned in order to reduce the amplitude of the observed light to one-fifth of its original value.

3. If the initial intensity was I0, what will the new intensity be (at the angle you just calculated)?

4. If we want the intensity to be one-fifth of its original value, what must be the angle through which one of the sheets is turned.

5. A ray of plane-polarized light of intensity 25 Wm-2 is normally incident on a polarizing filter. The intensity of the transmitted light is 20 Wm-2. Calculate the angle between the plane of the polarized light and the preferred plane of the filter.

Answer :

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