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Does the value of fringe width in Young's double slit experiment changes if we place a thin film in front of point source of another refractive index?

Does the value of fringe width in Young's double slit experiment changes if we place a thin film in front of point source of another refractive index? 

Grade:12th pass

2 Answers

Arun
25757 Points
2 years ago
When we put a glass plate in the path of one of the beams interfering with each other then there is change of place of fringes on the screen. All the fringes including central fringe are shifted. It does not result in change of fringe width
Vikas TU
14149 Points
2 years ago
Dear student 
It depends upon the wavelength or frequency of light. Intensity of the incident light has no relation with the fring width in any case. It's the measure of the power incident on a surface per unit area. The brightness of the fringes are affected by intensity of incident light not the fringe width.

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