In Young's Double Slit Experiment, if the distance between the two slits (d) is halved and the distance between the slits and the screen (D) is doubled, the fringe width (β) will become:

Question

Think Extraordinary · Accepted Answer

Correct Answer: Option A. 4 times. Explanation: Fringe width β = λD / d. When d' = d / 2 and D' = 2D, β' = λ(2D) / (d / 2) = 4(λD / d) = 4β.

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Option B: 2 times

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Option C: Half

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Option D: Unchanged

Optics - Wave Optics

In Young's Double Slit Experiment, if the distance between the two slits (d) is halved and the distance between the slits and the screen (D) is doubled, the fringe width (β) will become: