In Young’s double slit experiment the distance between the slits and the screen

In Youngs Double Slit Experiment The Distance Between The Slits Physics QuestionIn Youngs Double Slit Experiment The Distance Between The Slits Physics Question

In Young’s double slit experiment the distance between the slits and the screen is doubled. The separation between the slits is reduces to half. As a result the fringe width

Options

(a) is doubled
(b) is halved
(c) becomes four times
(d) remains unchanged

Correct Answer:

becomes four times

Explanation:

Fringe width β = Dλ/d;
From qn D’ = 2D and d’ = d/2
β’ = λD¹ / d¹ = 4β

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