9702/Oct Nov/13/2017/Q29

A beam of laser light is directed towards a narrow slit.

After emerging from the other side of the slit, the light then falls on a screen.
What is the pattern of light seen on the screen?

Solution:

Answer: B

The laser light will undergo diffraction after going through the narrow slit.

Please refer to this "Laser Diffraction and Interference" video for further understanding.

Reference: PYQ - Oct/Nov 2017 Paper 13 Q29