# Problem: 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 6.00 m away from the slits. What is the distance Δymax-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum? Δymax-min = ________ m

###### FREE Expert Solution

Diffraction maxima:

Diffraction minima:

For small angles measured in radians:

tan θ ≈ sin θ ≈ y/L

• L = 6.00 m
• λ1 = d/20
• λ2 = d/15

The position of the second maxima for laser 2:

• m = 2

ymax,1 = mλ1L/d = 2(d/20)6.00/d = 0.6 m

82% (433 ratings) ###### Problem Details

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 6.00 m away from the slits.

What is the distance Δymax-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of the central maximum?

Δymax-min = ________ m