Question

Light incident at angle 52.5° on a bucket filled with water be completely polarised after reflection. Calculate the refractive index of the water.

Answer 1

Given: θ_B = 52.5°

n₁ = 1

To find: n₂ = ?

Formula: tan θ_B = `n_2/n_1`

n₂ = n₁ × tan θ_B

= 1 × tan (52.5°)

= 1.3032