Question 379: Wave Optics

Question

A graph is plotted between the fringe-width Z and the distance D between the slit and eye-piece, keeping other adjustment same. The correct graph is
(A)
(B)
(C)
(D)

Accepted Answer

The fringe width is given by
$$Z=\frac{D \lambda}{d}$$
As, $\lambda$ and $d$ are constants.
$$	herefore \quad Z \propto D$$
So, the graph between $Z$ and $D$ will be a straight line inclined to D-axis, as shown in graph (C).

Answer

A

Answer

B

Answer

D

Answer

C

Wave Optics

A graph is plotted between the fringe-width Z and the distance D between the slit and eye-piece, keeping other adjustment same. The correct graph is (A) (B) (C) (D)

Choose the correct answer: