Question

How does a fish with in young's double slit experiment change when the distance of separation between the slits?

Answer 1

Answer:

Explanation:

The distance between two consecutive bright fringes is

x = ( Lambda) D/d. Here, Lambda is wavelength , D is separation between slits and screen and d is separation between two slits.

But,

x/D = tan ( theta)=(Lambda)/d.

(Theta ) is angular separation between conservative bright or dark fringes.

Therefore, there is no change in angular separation.

Answer 2

The distance (y) of bright fringe/maxima from the centre of the screen can be calculated as: yn=nλDd where n is the order of the maxima. Hence, if the separation of the screen from the screen is doubled, the fringe width will also be doubled.