Search any question & find its solution
Question:
Answered & Verified by Expert
In Young's double slit experiment, the distance between two slits is made three times then the fringe width will become
Options:
Solution:
1297 Upvotes
Verified Answer
The correct answer is:
\(1 / 3\) times.
Fringe width, $\beta=\frac{\lambda D}{d}$
From question, $d^{\prime}=3 d$
$\therefore \quad$ New fringe width, $\beta^{\prime}=\frac{\lambda D}{d^{\prime}}$
$\therefore \quad \beta^{\prime}=\frac{\lambda D}{3 d}=\frac{\beta}{3}$.
From question, $d^{\prime}=3 d$
$\therefore \quad$ New fringe width, $\beta^{\prime}=\frac{\lambda D}{d^{\prime}}$
$\therefore \quad \beta^{\prime}=\frac{\lambda D}{3 d}=\frac{\beta}{3}$.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.