NEET2016PhysicsWave OpticsActual
The two coherent sources with intensity ratio produce interference. The fringe visibility will be
Options
- A2 1+
- B2
- C2 (1+ )
- D1+
Correct answer
A. 2 1+
Step-by-step solution
I₁ I₂ = a^2 b^2 = a b = Fringe visibility is given by aligned V= & I_ -I_ I_ +I_ = (a+b)^2-(a-b)^2 (a+b)^2+(a-b)^2 & = 4 a b 2 (a^2+b^2 ) = 2(a / b) ( a^2 b^2 +1 ) = 2 +1 aligned