Question

If the ratio of the intensity of two coherent sources is 4 then the visibility of the fringes is

Answer 1

Answer:

Solution :

I1I2=14⇒I1=k and I2=4k ∴ Fringe visibility V=2I1I2−−−−√(I1+I2)=2k×4k−−−−−√(k+4k)=0.8