Two slits are separated by a distance of $0.5\;mm$ and illuminated with light of $\lambda = 6000\mathop {\rm A}\limits^ \circ $. If the screen is placed $2.5\;m$ from the slits. The distance of the third bright fringe from the centre will be

JEE PHYSICS MCQ: WAVE OPTICS

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Two slits are separated by a distance of

0.5\;mm

and illuminated with light of

\lambda = 6000\mathop \mathrm{A}\limits^ \circ

. If the screen is placed

2.5\;m

from the slits. The distance of the third bright fringe from the centre will be

View answer and explanation

Correct option: D

9\;mm

Option D (

9\\;mm

) is correct because the distance of the third bright fringe from the center is calculated using the formula for fringe spacing in Young's double-slit experiment.

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