A thin transparent sheet is placed in front of a Young's double slit. The fringe-width will (a) increase (b) decrease
A thin transparent sheet is placed in front of a Young's double slit. The fringe-width will
(a) increase
(b) decrease
(c) remain same
(d) become nonuniform.
4 views
1 Answers
(c) remain same
EXPLANATION:
The fringe width is given as w = Dλ/d where D = distance of the screen from the slits d = distance of slits.
The wavelength λ remains the same when the light comes out of the film. Thus none of the entity D, d or λ changes. So the fringe with will remain the same. Hence the option (c).
4 views
Answered