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In a biprism experiment, when sodium lig...

In a biprism experiment, when sodium light of wavelength 5890 Å 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 :

A

4780 Å

B

6161 Å

C

8835 Å

D

4381 Å

Text Solution

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The correct Answer is:
A
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