Published by:
CGP EDU Academic Team
Published on: August 23, 2026
In a Young's double slit experiment, two slits are located 1.5 mm apart. The distance of screen
from slits is 2 m and the wavelength of the source is 400 nm . If the 20 maxima of the double slit pattern are contained within the centre maximum of the single slit diffraction pattern, then the width of each slit is 
, where x -value is 
Text Solution
Verified by ExpertsThe correct answer is:
15
(15)
Width of 20 maxima of double slit 
width of central maxima of single slit
Value of 
is 15
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