What Is the Distance Between the Slits in Young's Double-Slit Experiment?

[Aoiumi]

Homework Statement

When two parallel slits are illuminated with monochromatic light of wavelength 632.8 nm, the angle between the center of the central maximum and the center of the second side maximum is .45 degrees. What is the distance between the parallel slits.

Homework Equations

d sin θ = n λ

The Attempt at a Solution

d=2(632.8 nm)/sin 45 degrees

d = 1487.36 nm

My "d" value seems a bit odd, so I wanted to make sure I did this correctly. Note that I assigned "2" as the value of n because the problem said "second side maximum". Thank you.

 

[mfb]

.45 degrees and 45 degrees are not the same thing. Apart from that (and the resulting wrong value for d), it looks fine.

 

[Aoiumi]

Okay. Thank you for the confirmation!