(Part-B)State whether the angular width of the central maximum in a single-slit diffraction pattern increases, decreases, or stays the same if each of the following changes is made. Assume that each change is made independent of the others and that the apparatus is returned to its original state before the next change is made. (b) The entire experiment is moved from air and instead immersed in alcohol.
(A)Angular width increases.
(B)Angular width decreases.
(C)Angular width unchanged.
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