Question

Define angle of deviation​

Answer 1

Answer:

The angle of deviation is defined as the angle which is obtained from the difference between the angle of incidence and the angle of refraction created by the ray of light travelling from one medium to another that has a different refractive index.

or simply angle made by produced incident ray and emergent ray....

Answer 2

Answer:

Angle substended by the Incidents ray and emergent ray in glass prism is called Angle of deviation