If ray travelling in air is incident on a transparent med...
If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
A.
cosα / sinβ
B.
sinα / sinβ
C.
cosβ / sinα
D.
sinβ / sinα
Correct answer is A
n=sinisinr
i=90−α
∴
⇒ n = \frac{cos \alpha}{sin \beta}