Question

critical angle and total internal reflection with illustration?​

Answer 1

Answer:

If the angle of incidence is bigger than the critical angle, the refracted ray will not emerge from the medium, but will be reflected back into the medium. This is called total internal reflection. The critical angle occurs when the angle of incidence where the angle of refraction is \(\text{90}\)\(\text{°}\).

see the diagram in the attachment

hope it helps ☺️