The length of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is 1.5. Then the angle of prism is

Step-by-step solution

Here, _m=A, =1.5 = (A+ _m ) 2 A 2 = (A+A) 2 A 2 = 2 ( A 2 ) ( A 2 ) ( A 2 ) 3 2 =2 A 2 ( =1.5= 3 2 ) A 2 = 3 4 A 2 = ⁻¹ ( 3 4 ) or A=2 ⁻¹ ( 3 4 )