Answer:
Green laser
Explanation:
In the double slit experiment, the distance between two consecutive bright spots or two consecutive dark spots is defined as the fringe width
We are assuming that the two slits are on a vertical line
The formula for fringe width is (D× wavelength of light) ÷ d
where D is the distance from the slit to the screen where the interference pattern is observed
d is the distance between the two slits
As it is given that both lasers have same configurations which means they both have same value of D and d
∴ Fringe width directly depends on the wavelength of the light
As green laser has more wavelength when compared to blue laser
∴ Green laser would produce an interference pattern that has the largest spacing between bright spots when compared to blue laser
