AP EAMCET2004PhysicsRay Optics
The refracting angle of a prism is A and the refractive index of the material of the prism is (A / 2) . The angle of minimum deviation of the prism is
Options
- A+2 A
- B-2 A
- C2 +A
- D2 -A
Correct answer
B. -2 A
Step-by-step solution
array rlrl & = A 2 = ( A+ m 2 ) A / 2 & or A 2 A 2 = ( A+ m 2 ) A 2 & or (90^ - A 2 ) = ( A+ m 2 ) & or 90^ - A 2 = A+ m 2 & or 180^ -A =A+ m & m =180^ -2 A= =2 A array