NEET2011PhysicsRay OpticsActual
A thin prism of angle 15^ made of glass of refractive index ₁=1.5 is combined with another prism of glass of refractive index ₂=1.75 . The combination of the prism produces dispersion without deviation. The angle of the second prism should be
Options
- A7^
- B10^
- C12^
- D5^
Correct answer
B. 10^
Step-by-step solution
For without deviation aligned A A^ & = ^ -1 -1 15^ A^ & = 1.75-1 1.5-1 15 A^ & = 0.75 0.50 A^ & = 0.50 15 0.75 =10^ aligned