Question

A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is
equal to the angle of emergence and each of these angles is equal to (3/4) of the angle of prism. The
angle of deviation is
​

Answer 1

Answer:

$\huge{\underline{\mathtt{\red{❥A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}$Given:

Angle of incident i= Angle of emergence = 43A

Where , A= Angle of prism

Since prism is equilateral A=60

∴i=e=60 ° × 43 = 45 °

From prism formula:

Angle of deviation , δ=i+e−A=45+45−60=30 °