Question

What is critical angle?... ​

Answer 1

• The critical angle is defined as the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected.
• It must be noted here that the critical angle is an angle of incidence value. For the water-to-air limit, the critical angle is 48.6 degrees. For the boundary between the glass and crown water, the critical angle is 61.0 degrees.
• The actual value of the critical angle is depending on the combination of materials present on each side of the boundary.

HOPE THIS HELPS YOU ✌️✌️☘️☘️

Answer 2

Explanation:

the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but totally reflected.