Question

A light source emits visible light of two wavelengths: λ = 430 nm and λ’ = 510 nm. The source is used in a double- 

slits interference experiment in which L =1.50 m and d = 0.025 0 mm. Are there any locations on the screen where  

the bright fringes from the two wavelengths overlap exactly?

Answer 1

It is possible to have locations on the screen where  the bright fringes from the two wavelengths overlap