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Phase Difference Problem, Ratio of I/Io

  • Thread starter Lemmy
  • Start date
22
0
1. Homework Statement
What is the ratio of the intensity at this point to the intensity at the center of a bright bridge


2. Homework Equations
GIVEN:
Wavelength=6.9x10^-7m
d=0.00014m (distance between slits)
L=12m (Length to screen/point)
Y=14mm

EQUATION:
I=Io cos^2(phi/2) [(Sin (B/2))/(B/2)]
I/Io=cos^2(phi/2) [(Sin (B/2))/(B/2)]
3. The Attempt at a Solution


I have phi, solved for b/2 and plugged it in and did everything.

I STILL GOT IT WRONG!?!?! is my equation wrong??
 

Answers and Replies

Tom Mattson
Staff Emeritus
Science Advisor
Gold Member
5,474
20
Where is "this point" and what's a "bright bridge"?
 

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