Physics · 2025
JEE Main · 4 April 2025, Shift 1 · Q45
In a Young's double slit experiment, the slits are separated by 0.2 mm. If the slits separation is increased to 0.4 mm, the percentage change of the…
In a Young's double slit experiment, the slits are separated by $\displaystyle 0.2$ mm . If the slits separation is increased to $\displaystyle 0.4$ mm , the percentage change of the fringe width is :
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 50 \%$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.