Wave OpticsHard
Question
A parallel coherent beam of light falls on fresnel biprism of refractive index μ and angle α. The fringe width on a screen at a distance D fron biprism will be (wavelength = λ)
Options
A.
B.
C.
D.None of these
Solution
β = 
For parallel beam, a = ∞. So β =
For parallel beam, a = ∞. So β =
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