Answer:
[tex]I=\frac{10}{4}[/tex]
Explanation:
A polarizer changes the orientation of the oscillations of a light wave.
I₀ = Intensity of unpolarized light = 10
θ = Angle given to the polarizer = 60°
Intensity of light
I = I₀cos²θ
⇒I = 10cos²60
[tex]\\\Rightarrow I=10\times \frac{1}{2}\times \frac{1}{2}\\\Rightarrow I=\frac{10}{4}[/tex]
So, the after passing through the second polarizer is [tex]\mathbf{\frac{10}{4}}[/tex]