Question regarding a double slit experiment

AI Thread Summary
The discussion revolves around a double slit experiment involving a transparent paper with a refractive index of 1.45 and thickness of 0.02mm placed over one slit. The problem requires calculating the number of fringes that will cross the center when the paper is removed, using the equation Yo=β/λ(n-1)t. Participants express confusion about the variables in the equation, specifically β, which is understood to be the fringe width, and Yo, which remains unclear. The primary focus is on understanding how to apply the given equation to solve the problem effectively. Clarification on the definitions of the variables and the steps to calculate the number of fringes is sought.
Dongorgon
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Homework Statement



The question is as follows, I'm truly stuck where to start here, any help would be much appreciated:

A transparent paper of refractive index 1.45 and thickness 0.02mm is pasted on one of the slits of a double slit experiment. Monochromatic light of wavelength 620nm is passed through the slits. How many fringes will cross through the centre if the paper is removed?

Homework Equations



I have been provided with one equation for this, which is as follows:

Yo=β/λ(n-1)t

Where n is the refractive index and t is the thickness.



The Attempt at a Solution



Truly stuck where to even begin I'm sorry to say.
 
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Dongorgon said:

Homework Statement



The question is as follows, I'm truly stuck where to start here, any help would be much appreciated:

A transparent paper of refractive index 1.45 and thickness 0.02mm is pasted on one of the slits of a double slit experiment. Monochromatic light of wavelength 620nm is passed through the slits. How many fringes will cross through the centre if the paper is removed?

Homework Equations



I have been provided with one equation for this, which is as follows:

Yo=β/λ(n-1)t

Where n is the refractive index and t is the thickness.

The Attempt at a Solution



Truly stuck where to even begin I'm sorry to say.
What are β and Yo in this equation? (I take it that λ is wavelength.)
 
From what I am aware, β is the fringe width and I'm truly not sure what Yo even is, possibly the width of intensity?
 
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