Question

In Young’s double slit experiment, we get 10 fringes in the
field of view of monochromatic light of wavelength 4000Å.
If we use monochromatic light of wavelength 5000Å, then
the number of fringes obtained in the same field of view is
(a) 8 (b) 10 (c) 40 (d) 50

Answer 1

Answer:

dinwbxhwnbshwbsvdjendvxhns

Answer 2

Answer:

As βλ

∴ fringe width becomes

4

5

times,

No, of fringes =

5

4

×10=8