The light beam in the figure passes through a polarizer whose transmission axis makes an angle with the vertical The beam is partially polarized and partially unpolarized, and the average intensity S0 of the incident light is the sum of the average intensity S0, polar of the polarized light and the average intensity S0, unpolar of the unpolarized light S0 S0, polar S0, unpolar The intensity S of the transmitted light is also the sum of two parts S Spolar Sunpolar As the polarizer is rotated clockwise, the intensity of the transmitted light has a minimum value of S 2 0 W m2 when 20 0 and has a maximum value of S 8 0 W m2 when the angle is max Concepts (i) How is Sunpolar related to S0, unpolar (ii) How is Spolar related to S0, polar Calculations (a) What is the intensity S0, unpolar of the incident light that is unpolarized (b) What is the intensity S0, polar of the incident light that is polarized Incident light Transmitted light 5o So, polan So, unpolar S Spolar Sunpolar

Question: The light beam in the figure passes through a polarizer whose transmission axis makes an angle with the vertical. The beam is partially polarized

The light beam in the figure passes through a polarizer whose transmission axis makes an angle Ï• with the vertical. The beam is partially polarized and partially unpolarized, and the average intensity SÌ…0 of the incident light is the sum of the average intensity SÌ…0, polar of the polarized light and the average intensity SÌ…0, unpolar of the unpolarized light; SÌ…0 = SÌ…0, polar + SÌ…0, unpolar. The intensity S of the transmitted light is also the sum of two parts: SÌ… = SÌ…polar + SÌ…unpolar. As the polarizer is rotated clockwise, the intensity of the transmitted light has a minimum value of SÌ… = 2.0 W/m2 when Ï• = 20.0Â° and has a maximum value of SÌ… = 8.0 W/m2 when the angle is Ï• = Ï•max.

Concepts:

(i) How is SÌ…unpolar related to SÌ…0, unpolar?

(ii) How is SÌ…polar related to SÌ…0, polar?

Calculations:

(a) What is the intensity SÌ…0, unpolar of the incident light that is unpolarized?

(b) What is the intensity SÌ…0, polar of the incident light that is polarized?

The light beam in the figure passes through a polarizer

Incident light Transmitted light 5o So, polan +So, unpolar S Spolar +Sunpolar

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