Light wavelength passing through a grating sketch help!

  • Thread starter alicia113
  • Start date
  • #1
alicia113
103
0

Homework Statement



light with a wavelength of 520 nm abd 630 nm passes through a diffraction grating that contains 6000 lines/cm.

a) sketch a diagram of the image produced from m=0 to m=2, label the order of each fringe

b) calculate the angles for the first and second order maxima that would appear on the screen

Homework Equations





The Attempt at a Solution


ok so i have no idea how to make this diagram up, and i feel if i get help with that then part b will become easier for me
 

Answers and Replies

  • #2
Emilyjoint
210
0
In some ways part (b) is the easy bit... all you need is the equation for adiffraction grating:
dSinθ = nλ so you can calculate the angular postion (θ) of the maxima.
What you have to watch out for is d = line separation and you have been give Number of lines per cm.
Once you have the angles for the n=1 and n=2 max for each wavelength you should be able to do a sketch showing their positions.
hope this will help you
 

Suggested for: Light wavelength passing through a grating sketch help!

Replies
4
Views
404
Replies
2
Views
659
  • Last Post
Replies
3
Views
406
Replies
6
Views
637
Replies
16
Views
643
Replies
5
Views
341
Replies
3
Views
588
Top