When a light is incident at one end of wood with qurtz. At a small angle, then refracted light falls on the wall of the fibre at an angle

When a light is incident at one end of wood with qurtz. At a small ang

1.	When a light is incident at one end of wood with qurtz. At a small angle, then refracted light falls on the wall of the fibre at an angle
Answer» EQUAL to CRITICAL angle GREATER than `90^@` equal to `0^@` greater than critical angle Answer :D