Optics Question 215
Question: In a diffraction pattern by a wire, on increasing diameter of wire, fringe width
[RPMT 1998]
Options:
A) Decreases
B) Increases
C) Remains unchanged
D) Increasing or decreasing will depend on wavelength
Show Answer
Answer:
Correct Answer: A
Solution:
$ \beta =\frac{\lambda .D}{d} $ where D = distance of screen from wire, d = diameter of wire
