In a double slit experiment, the distance between the slits is d. The screen is at a distance D from the slits. If a bright fringe is formed opposite

Question

In a double slit experiment, the distance between the slits is d. The screen is at a distance D from the slits. If a bright fringe is formed opposite

In a double slit experiment, the distance between the slits is d. The screen is at a distance D from the slits. If a bright fringe is formed opposite to one of the slits, its order is
A. `(d)/(lambda)`
B. `(lambda^(2))/(dD)`
C. `(D^(2))/(2lambda D)`
D. `(d^(2))/(2D lambda)`

Monjur Alahi

7 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
When a bright frings is formed opposite to one of the slits, `x=(d)/(2)`
Path difference `=(xd)/(D)=(d)/(2)xx(d)/(D)=(d^(2))/(2D)`
If it is `n^(th)` order bright fringe,
Path difference, `n lambda=(d^(2))/(2D) " or "n=(d^(2))/(2D lambda)`

7 views Answered 2023-02-05 15:29