Find out the angle of refraction when a light travels from medium A to medium B.
Speed of light in A =2×108 m/s
Speed of light in B =3×108 m/s
sin−1(34)
According to Snell's law
μA sin i=μB sin r⇒sin isin r=μBμA⇒sin 30∘sin r=VairVBVairVA=VAVB=2×1083×108=23⇒sin r=32×sin 30∘=34⇒r=sin−1(34)