A ray of light traveling from a rectangular glass&nb...
A ray of light traveling from a rectangular glass block of refractive index 1.5 into air strikes the block at an angle of incidence of 30. Calculate its angle of refraction.
48.6°
19.5°
20.0
45.0
Correct answer is A
Given that refractive index = 1.5, angle of incidence = 30°, angle of refraction =?
using snell's law = refractive index = sinisinr
=1n=sin30sinr
= sinr=1.5×sin30
r = sin10.75
= 48.6°
this is because ray is traveling from a more denser medium to a less dense medium
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