Question

When unpolarised light is passed through crossed polaroids, then light passing through the first polaroid ______

Options

• partially passes through the second polaroid

• passes with greater intensity

• is blocked by the second polaroid

• also passes through the second polaroid

Answer 1

When unpolarized light is passed through crossed polaroids, then light passing through the first polaroid is blocked by the second polaroid.

Explanation:

Intensity passed by the second polaroid is given by I = I₀ cos²θ when θ = 90°, I = 0