Solving a problem in physics section 2 point 10 optics

Solving a problem in physics section 2 point 10 optics

10. In the experiment with mirrors Fresnel distance d between the virtual image of the light source is 0.5 mm, the distance ℓ from them to the screen is 5 m. In the yellow light of the width of the interference fringes is 6 mm. Determine a wavelength λ yellow.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)