Question

Light travelling in air strikes a glass plate at an angle ,

where is measured between the incoming ray and the glass

surface. Upon striking the glass, part of the beam is reflected

and part is refracted. If the refracted and reflected beams make

an angle of with each other,

What is the critical angle?​

Answer 1

Answer:

Light travelling in air strikes a glass plate at an angle ,

where is measured between the incoming ray and the glass

surface. Upon striking the glass, part of the beam is reflected

and part is refracted. If the refracted and reflected beams make

an angle of with each other,

Explanation: