Answer :
The distance between the second maximum of laser 1 and the third minimum of laser 2, is 0.36 m.
x1 = nλL / d
n=second maxima of laser 1
= 2 * (d/20) *5.40 /d
= 0.54 m
X2= (n+1/2)λL/d
n= 2= third minima of laser 2
= 2.5 *(d/15)* 5.40 /d
= 0.9m
distance del(y)max-min between second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum =
0.9 -0.54 = 0.36 m
A laser is a device that produces light by optically amplifying electromagnetic energy through stimulated emission. The term "laser" stands for "light amplification by stimulated emission of radiation" (abbreviated "laser"). The first laser was created in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical research by Charles Hard Townes and Arthur Leonard Schawlow.
Because it emits coherent light, a laser is unique among other light sources. Laser cutting and lithography are made possible by spatial coherence, which makes it possible to focus a laser on a small area.
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