Monochromatic light with a wavelength of 6.4 e -7 meter passes through two narrow slits, producing an interference pattern on a screen 4.0 meters away. the first order bright band lines are 2.0 e -2 meters away from the central bright maxima. what is the distance between the slits? 1.3 e -4 m 8.0 e -6 m 3.2 e -9 m 7.8 e3 m

The distance between the slits is given by  1.3 × m

Given:

D = 4 m

y =

m = 1

To find:

distance between slits, d = ?

Formula used:

y =

y = distance of first bright band from central maxima

D = distance between screen and source

d = distance between slits

= wavelength

Solution:

distance of first bright band from central maxima is given by,

y =

y = distance of first bright band from central maxima

D = distance between screen and source

d = distance between slits

= wavelength

Thus,

d =

d =

d = 1.28 ×

d = 1.3 × m

The distance between the slits is given by  1.3 × m