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

η₁ = 2.6

Step-by-step explanation:

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

`(\eta_2)/(\eta_1) = (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,

`(1.5)/(\eta_1) = (Sin\ 30^0)/(Sin\ 60^0)`

η₁ = 2.6