Wavelength of New Laser with Diffraction Grating Measurement

[Kennedy111]

Homework Statement

To confirm the wavelength of a new laser, a scientist prepares a diffraction grating with a distance of 5.00 x 10^-6 m between slits and places it in front of the laser which is 1.50 m in front of a screen. The scientist measures the distance from the central maxima to the second bright fringe, which is 0.33 m. What is the wavelength of the laser?

d = 5.00 x 10^-6 m
L = 1.50 m
n = 2
x = 0.33m

Homework Equations

λ= xd/nL

λ= sinθ(d)/n

The Attempt at a Solution

λ = xd/nL

= (0.33m)(5.00 x 10^-6m) / (2)(1.50)
= 5.5 x 10^-7 m

 

[mfb]

Looks fine. Where is your question/problem?