Question

The tip of a needle does not give a sharp image on a screen. This is due to

A. polarisation
B. interference
C. diffraction
D. none of these

Answer 1

The tip of a needle does not give a sharp image on a screen due to diffraction.

Step-by-step explanation:

The tip of a needle does not give a sharp image on a screen due to diffraction.

Diffraction is the bending of waves around obstacles or openings. When light waves pass through the tip of a needle, they encounter multiple edges and openings, causing the waves to diffract and spread out. This results in a blurred image on the screen instead of a sharp one.