A prism has refracting angle of `60°` and its material has refractive index 1.5 and 1.6 for red and violet light respectively. A parallel beam of white light is incident on one face of the prism such that the red light undergoes minimum deviation. Find the angle of incidence (i) and the angular width `(theta)` of the spectrum obtained.
Given: `sin (49^(@)) = 0.75^(@), sin(28^(@)) = 0.47, sin(32^(@)) = 0.53, sin(58^(@)) = 0.85`

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white light is incident on one face at an angle of incident, which gives minimum deviation for red light. Find : (a) the angle of incidence (b) angular width of the spectrum (c) the length of the spectrum if it is focussed on a screen by lens focal length 100 cm . [Use: sin (49.7^(@)) =0.760, sin (31.6^(@))=0.520 , sin (28.4^(@))=0.475, sin (56^(@))=0.882 , pi =22//7 ]

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angular width of the spectrum is :

A ray light is incident on a 60^@ prism at the minimum deviation position.The angle of refraction at the face (i.e.incident face)of the prism is:

A ray of light is incident on a 60^(@) prism at the minimum deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is-

A ray of light is incident on a 60^(@) prism at the minimum deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is-

A ray of light is incident on a 60^(@) prism at the minimum deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is-

A glass prism with a refracting angle of 60^(@) has a refractive index 1.52 for red and 1.6 for violet light. A parallel beam of white is incident on one face at an angle of incident which gives minimum deviation for red light. Find : [Use : sin(50^(@))=0.760 , sin(31.6^(@))=0.520 , sin (28.4^(@))=0.475 , sin (56^(@))= 0.832 , = 22//7 ] The angle of incidence at the prism is :