A two-slit apparatus is covered with a red 643 nm filter, Ask an Expert

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A two-slit apparatus is covered with a red (643 nm) filter. When white light is shone on the filter, on the screen beyond the two-slit apparatus, there are nine interference maxima within the 4.11-cm-wide central diffraction maximum.

a) When a blue (423 nm) filter replaces the red, how many interference maxima will there be in the central diffraction maximum?

b) And how wide will that diffraction maximum be?

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Category:- Physics
Reference No.:- M9884082

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