Discussion Forum

 An unpolarized beam of intensity  I₀ is incident on a pair of nicols making an angle of 60° with each other. The intensity  of light emerging from the pair is 

Answer:

Explanation:

According to Malu's law  $I= I_{0}\cos^{2}\theta=I_{0}(\cos^{2}60^{0})$

 = $I_{0}\times(\frac{1}{2})^{2}= \frac{I_{0}}{4}$