• Support PF! Buy your school textbooks, materials and every day products Here!

Light wavelength passing through a grating sketch help!

  • Thread starter alicia113
  • Start date
  • #1
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
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
 

Related Threads for: Light wavelength passing through a grating sketch help!

Replies
1
Views
3K
Replies
9
Views
11K
Replies
2
Views
2K
Replies
3
Views
4K
Replies
3
Views
2K
  • Last Post
Replies
4
Views
840
Replies
2
Views
140
  • Last Post
Replies
1
Views
646
Top