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MHT CET 2023 (10 May, Shift 1) · YDSE: Fringe Width & Fringe Positions

YDSE: Fringe Width & Fringe Positions question from MHT CET 2023 (10 May, Shift 1)

Q30MHT CET 2023 · 10 MAY · SHIFT 1Easy

YDSE: Fringe Width & Fringe Positions

In Young's double slit experiment the separation between the slits is doubled without changing other setting of the experiment to obtain same fringe width, the distance 'D' of the screen from slit should be made

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Answer: (c)

$\beta = \frac{\lambda D}{d}$ must stay the same, so $D \propto d$ .
$d \to 2d$ needs $D \to 2D$ .
So the answer is (c) $2D$ .

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