Question

4. According to the law of Malus, the intensity of polarized light emerging through the analyzer varies as -
(A) IOCos20
(B) IOSin28
(C) IOCose
(D) 10/2 Cos20​

Answer 1

Explanation:

(D) is right answer -------

Answer 2

According to the law of malus, the intensity 0f polarized light emerging through the analyzer varies as IOCos2θ (option A)

Explanation:

• According to malus law, when completely plane polarized light is incident on the analyzer.
• this law is all about the condition when polariser effect on polarised light
• In malus law the intensity I of the light transmitted by the analyzer is always directly proportional to the square of the cosine of the angle.
• the angle which is between the transmission axes of the analyzer and the polarizer.
• here θ is the angle between the axes of the polarisers.
• Io is the intensity of the polarised input to the second polariser.