Conditions to achieve total internal reflection between water and air :
(a) Light must travel from water to air
(b) Light must travel from air to water
(c) The క్e inside the water must be greater than that of the critical angle
(d) The angle of incidence inside the water must be lesser than that of the critical angle
1
(a) and (c)
2
(b) and (d)
3
(a) and (d)
4
(b) and (c)