When a ray of light emerges from a block of glass, the critical angle is

When a ray of light passes from air to glass, for what angle of incidence, the ray will not be deviated?

Glass has refractive index mu with respect to air and the critical angle for a ray of light going from glass to air is theta . If a ray of light is incident from air on the glass with angle of incidence theta , the corresponding angle of refraction is

When a ray of light enters a water filled glass tank from a glass face making a non-zero angle to the normal, the emergent ray from the opposite face will follow a path which is

Statement-1 : A ray of light incident normally on a refracting surface does not suffer any refraction. Statement-2 : The critical angle for total internal refraction is smaller when a ray of light travels from glass to water than when it travels from glass to air.