Wave OpticsHard
Question
In a biprism experiment, when sodium light of wavelength 5890
is used then twenty fringes are observed in 23 mm distance on screen. In order to obtain 30 fringes in 28 mm of the interference pattern, one should use light of wavelength :
is used then twenty fringes are observed in 23 mm distance on screen. In order to obtain 30 fringes in 28 mm of the interference pattern, one should use light of wavelength :Options
A.4780
B.6161
C.8835
D.4381
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