Question

If in a single slit diffraction experiment the wavelength is increased, which of the following happens to the diffraction pattern?A) The central maximum broadens.
B) The minima get closer together.
C) The central maximum narrows.
D) The minima remain the same.
E) Eventually you get double slit interference

Answer 1

Answer:

The central maximum broadens.

Explanation:

In the diffraction pattern in a single slit diffraction experiment. The position of maxima is given by :

$y=\dfrac{m\lambda D}{d}$

Where

m is the order

D is the distance between slit and the screen

d is the slit width

It is clear that on increasing the wavelength in a single slit, the central maximum broadens. Hence, the correct option is (A).