Question

Calculate the refractive index for a substance where the angle of incidence is 300 , the angle of refraction is 600 , and the refractive index of second substance is 1.5

Answer 1

Answer:

η₁ = 2.6

Explanation:

Here, we will use snell's law to calculate the refractive of the substance:

$\frac{\eta_2}{\eta_1} = \frac{Sin\theta_1}{Sin\theta_2}$

where,

η₁ = refractive index of first substance = ?

η₂ = refractive index of second substance = 1.5

θ₁ = angle of incidence = 30°

θ₂ = angle of refraction = 60°

Therefore,

$\frac{1.5}{\eta_1} = \frac{Sin\ 30^0}{Sin\ 60^0}$

η₁ = 2.6