MHT CET 2023 Physics question

In a single slit experiment, the width of the slit is doubled. Which one of the following statements is correct?

(A)The intensity and width of the central maximum are unaffected
(B)The intensity remains same and regular width becomes half
(C)The intensity and angular width both are doubled
(D)The intensity increases by a factor 4 and the angular width decreases by a factor of Correct

Answer: (D)

Solution

In single-slit diffraction the angular width of the central maximum is , so doubling the slit width halves the angular width (decreases by a factor of ). Doubling the slit width doubles the amplitude of the light reaching the central point (twice as much light passes

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Question ID VK-094686