Question

For glass prism (μ = √3) , the angle of minimum deviation is equal to the angle of prism. The angle of prism is(a) 30°(b) 45°(c) 60°(d) 90°

Answer 1

From the formula μ =sin[(A+D) /2]/sin A/2

where,μ= refractive index of the prism.  

A= angle of prism  

D=angle of minimum deviation.  

Given, A=D; μ=√3

So, putting in formula, we get, A=60°.