Question

Light ray travel from vacuum into glass whose refractive index in 1.5 . If the angle of incidence is 30°, calculate the angle of refraction inside the glass.

Answer 1

Answer:Since it's vacuum, refractive index is taken to be 1. use snell's law of refraction n1xsin(i)=n2xsin(r) n1=1 sin(i)=sin(2r) n2=1.5 sin(r)=sin(r) ... has maximum angle of refraction when travelling from glass to air for same angle of incidence? ... If a ray of light traveling through the air strikes a glass slab at an angle of 30°

Explanation:

Answer 2

Explanation:

A ray of light passes from vacuum into a glass of refractive index 1.5. The angle of incidence is found to be twice the angle of refraction. What is the angle of incidence?

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Since it’s vacuum, refractive index is taken to be 1.

use snell’s law of refraction

n1xsin(i)=n2xsin(r)

n1=1

sin(i)=sin(2r)

n2=1.5

sin(r)=sin(r)

1*sin(2r)=1.5*sin(r)

2sin(r)cos(r)=1.5*sin(r)

cos(r)=1.5/2

cos(r)=0.75

r=cos^-1(0.75)

i=2r

i=2cos^-1(0.75)

I hope this helps.............