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A mixture of light, consisting of wavele...

A mixture of light, consisting of wavelength 590 nmand an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it is observed that the bright fringe of known light coincides with the 4th bright fringe of the unknown light. From the data, the wavelength of the unknonw light is

A

`885.0` nm

B

`442.5`nm

C

`776.8`nm

D

`393.4`nm

Text Solution

Verified by Experts

The correct Answer is:
B
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