In double slit experiment, the angular width of the fringes is 0.20o f – McqOptions

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1.	In double slit experiment, the angular width of the fringes is 0.20o for the sodium light (l =\[5890\,{AA}\]). In order to increase the angular width of the fringes by 10%, the necessary change in the wavelength is [MP PMT 1997]
A.	Increase of\[589\,\,{AA}\]
B.	Decrease of\[589\,\,{AA}\]
C.	Increase of\[6479\,\,{AA}\]
D.	Zero
Answer» B. Decrease of\[589\,\,{AA}\]

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