(a) Write the necessary conditions for the phenomenon of total interna

1.	(a) Write the necessary conditions for the phenomenon of total internal reflection to occur.(b) Write the relation between the refractive index and critical angle for a given pair of optical media.
Answer» (a) (i) The ray of light should travel from denser to rarer medium. (ii) The angle of incidence should be more than the critical angle. (b) μ = 1/sin i_C Where i_C is the critical angle.

(a) Write the necessary conditions for the phenomenon of total internal reflection to occur.(b) Write the relation between the refractive index and critical angle for a given pair of optical media.

Answer»

(a) (i) The ray of light should travel from denser to rarer medium.

(ii) The angle of incidence should be more than the critical angle.

(b) μ = 1/sin i_C

Where i_C is the critical angle.