(i) A ray of light falls normally on a face of a glass slab. What are the values of angle of incidence and angle of refraction of this ray? (ii) Light enters from air to a medium X. Its speed in medium X becomes 1.5xx10^(8)m//s. Speed of light in air is 3xx10^(8) m/s . Find the refractive index of medium X.

(i) A ray of light falls normally on a face of a glass slab. What are

1.	(i) A ray of light falls normally on a face of a glass slab. What are the values of angle of incidence and angle of refraction of this ray? (ii) Light enters from air to a medium X. Its speed in medium X becomes 1.5xx10^(8)m//s. Speed of light in air is 3xx10^(8) m/s . Find the refractive index of medium X.
Answer» SOLUTION :(i) `/_i=0^(@)` and `/_r=0^(@)` (II) `n_(x)=C/(v_(x))=(3xx10^(8))/(1.5xx10^(8))=2`