Question

What path does the refracted ray take when \[i=i_c\]?

विकल्प

• It is completely reflected back into the denser medium.

• It bends towards the normal.

• It travels along the boundary surface.

• It travels along the normal.

Answer 1

At the critical angle, the angle of refraction is \[90^\circ\]. The refracted ray therefore grazes along the boundary surface.