Question

If a ray of light traveling in air strikes the surface of an amethyst crystal (n 1.553) at 35° toward the normal, what is the angle of incidence

Answer 1

Angle of incidence is given as

`i = 63 ^o`

Step-by-step explanation:

As per law of refraction of light we know that

`n_1 sin i = n_2 sin r`

here we know that

angle of refraction is "r"

`r = 35^o`

now we have

`1 sin i = 1.553 sin35`

`sin i = 0.89`

`i = 63 ^o`