Answer to Question #224646 in Physics for Lala

Question

What happens to fringe width in case of interference pattern if:i. Distance between slits and the screen is doubled?
ii. . Distance between slits and the screen is halved?
iii. distance between slits is doubled?
iv. distance between slits is doubled and Distance between slits and the screen is halved?

Answer 1

This is what happens to fringe width in case of interference pattern if:

i. Distance between slits and the screen is doubled: Fringe width will be the same.

ii. Distance between slits and the screen is halved: Fringe width will be the same.

iii. Distance between slits is doubled: Fringe width will be halved

iv. Distance between slits is doubled and distance between slits and the screen is halved: Fringe width will decrease fourfold.