Phase Difference Problem, Ratio of I/Io

[Lemmy]

Homework Statement

What is the ratio of the intensity at this point to the intensity at the center of a bright bridge

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)]

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??

 

[quantumdude]

Where is "this point" and what's a "bright bridge"?

 

[m2003]

I would like to first clarify the problem and make sure all the given information is correct. The problem mentions a "bright bridge" but does not specify what this means. Is this referring to a specific point on the screen or is it a term used in the context of the experiment? Additionally, the given values for wavelength, distance between slits, length to screen, and Y do not seem to be related to each other in a specific equation.

Assuming that the problem is referring to the intensity pattern of a double-slit experiment, the equation provided for I/Io is incorrect. The correct equation for the intensity at a point on the screen is given by I=4Io cos^2(πd sinθ/λ), where d is the distance between the slits, λ is the wavelength, and θ is the angle between the point on the screen and the center of the pattern.

If the problem is asking for the ratio of the intensity at a point on the screen to the intensity at the center of the pattern, then the equation would be I/Io=cos^2(πd sinθ/λ). However, without knowing the specific point on the screen, it is not possible to accurately calculate this ratio.

In order to solve this problem correctly, more information is needed, such as the specific point on the screen or the definition of the term "bright bridge". Additionally, it would be helpful to know the context of the experiment and what is being studied.