Question

Choose the correct statement(s) regarding single slit diffraction experiment.

• A. Intensity of all bright fringes is the same.
• B. Intensity of central bright fringe is maximum.
• C. Intensity of all bright fringes is not same.
• D. Angular width of all the maxima is same.

Answer 1

Answer: (B), (C)

Intensity of all bright fringes is not same.

In a single slit diffraction experiment, the intensity versus $\sin \theta$ graph is given below.


It can be clearly seen from the graph that the intensity of central bright fringe is maximum and intensity of secondary maxima keeps on decreasing.

$\therefore$ Correct options are $\left(\text{B}\right)$ and $\left(\text{C}\right)$.