MHT CET · Physics · Wave Optics
In Young's double slit experiment, the slit separation is made threefold by keeping remaining setup same, the fringe width becomes
- A \(\frac{1}{9}\) times
- B \(\frac{1}{3}\) times
- C 9 times
- D 3 times
Answer & Solution
Correct Answer
(B) \(\frac{1}{3}\) times
Step-by-step Solution
Detailed explanation
Fringe width \(\beta\), in terms of slit separation \(d\) and screen distance \(D\) is given by,
\(\beta=\frac{\lambda D}{d}\)
If \(d\) is made three times, fringe width becomes \(\frac{1}{3}\) times
\(\beta=\frac{\lambda D}{d}\)
If \(d\) is made three times, fringe width becomes \(\frac{1}{3}\) times
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