In double slit experiment, the angular width of the fringes is 0.20 o for the sodium light ( λ λ =5890 Å). In order to increase the angular width of the fringes by 10%, the necessary change in the wavelength is
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Verified by ExpertsThe correct answer is:
A
can be increased by increasing λ λ , so here λ λ has to be increased by 10%
i.e., % Increase 
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