Question

physics Test 2 In a double slit experiment, if the separation between the two slits is 0.050 mm and the distance from the slits to a screen is 2.5 m, find the spacing between the first-order and second-order bright fringes when coherent light of wavelength 600 nm illuminates the slits.

Answer 1

Answer:0.015 m

Explanation:

Given

distance between two slits(d)=0.050 mm

Distance between slit and screen=2.5 m

Wavelength$(\lambda )=600 nm$

and distance between First order and second order$=\frac{D\lambda }{2d}$

$=\frac{2.5\times 600\times 10^{-9}}{2\times 5\times 10^{-5}}$

$=15\times 10^{-3}$

=0.015 m