Two lasers are shining on a double slit, with slit separation
d. laser 1 has a wavelength of d/20, whereas laser 2 has a wavelength of d/15. the lasers produce separate interference patterns on a screen a distance 4.50 m away from the slits. part a which laser has its first maximum closer to the central maximum?
Answer:
x(1) = n λ L / d = 1 . (d/ 20) . 4.2 / d = 0.21 m
x(2) = 4.2 / 15 = 0.28 m
So distance between them is 0.07 m
b)
x(1) = 0.42 ( for the 2nd max )
x(2) = 2.5 . 0.28 = 0.7 m ( for the 3rd in )
Separation = 0.28 m
