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.
Given that refractive index = 1.5, angle of incidence = 30°, angle of refraction =?
using snell's law = refractive index = \(\frac{sini}{sinr}\)
=\(\frac{1}{n } = \frac{sin30}{sinr}\)
= \(sinr = 1.5\times sin 30\)
r = \(sin^10.75\)
= 48.6°
this is because ray is traveling from a more denser medium to a less dense medium
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