CBSE Class 12 Physics 2023 Delhi Set 1 Paper

Question : 6

Total: 35

In a Young's double-slit experiment, the screen is moved away from the plane of the slits. What will be its effect on the following?
(i) Angular separation of the fringes.
(ii) Fringe-width.

Both (i) and (ii) remain constant.
(i) remains constant, but (ii) decreases.
(i) remains constant, but (ii) increases.
Both (i) and (ii) increase.

Solution: 👈: Video Solution

Angular separation is independent of distance of screen from slits.
Fringe width is proportional to the distance of screen from slits.

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