The drawing shows four sheets of polarizing material, each with its transmission

Question

The drawing shows four sheets of polarizing material, each with its transmission axis oriented differently. Light that is polarized in the vertical direction is incident from the left and has an average intensity of 23 W/m2. Determine the average intensity of the light that emerges on the right in the drawing (a) when sheet A alone is removed, (b) when sheet B alone is removed, (c) when sheet C alone is removed, and (d) when sheet D alone is removed.

The drawing shows four sheets of polarizing material, each with its transmission axis oriented differently. Light that is polarized in the vertical direction is incident from the left and has an average intensity of 23 W/m2. Determine the average intensity of the light that emerges on the right in the drawing (a) when sheet A alone is removed, (b) when sheet B alone is removed, (c) when sheet C alone is removed, and (d) when sheet D alone is removed. S = S = S = S =

Explanation / Answer

average intensity I(0) = 23 W/m^2

from teh maulus law I = I(0) cos^2?

when A is removed

plarisation occures due to BCD only

I = 23 cos^2 30 cos^2 60 cos^2 30 = 3.23 W/m^2

when D is removed polarisation occurs

I = 23 cos^2 0 cos^30 cos^2 60 = 4.31 W/m^2

when B is removed A and C are crossed position simillarlu when C is removed B and D are in crossed position in this case ? = 90

so there is no intensity in these cases

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