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

Thickness of Film

  • Thread starter hardwork
  • Start date
  • #1
20
0

Homework Statement


Light of wavelength 547nm is incident perpendicularly on a soap film (n=1.31) suspended in air. What is the smallest nonzero film thickness for which reflected light undergoes constructive interference?


Homework Equations


2t = (m + 1/2)(wavelength/nfilm)


The Attempt at a Solution


t = (0+1/2)(547nm/(2*1.31))
t = 104 nm

Is this correct?


---------
Could someone please check this as well: https://www.physicsforums.com/showthread.php?t=310439
 

Answers and Replies

  • #2
20
0
Anyone?
 
  • #3
rl.bhat
Homework Helper
4,433
5
It is correct.
 

Related Threads for: Thickness of Film

Replies
13
Views
911
Replies
4
Views
674
Replies
6
Views
1K
  • Last Post
Replies
4
Views
1K
Replies
4
Views
18K
Replies
1
Views
7K
Replies
5
Views
20K
Replies
2
Views
3K
Top