In Young's experiment, yellow light of
wavelength 5890 Å is used. The angular width
of the fringes is 0.2°. How much do you need
to change the wavelength to increase the
angular width by 10 % ?
A) Increase of 589 Å.
(B) Decrease of 589 Å.
(C) Increase of 6479 Å.
(D) No change have to be made in wavelength.
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