In a YDSE setup interference fringes are obtained by sodium light of wavelength `5890Å
Channel: Doubtnut
Date: 30/08/2020

In a YDSE setup interference fringes are obtained by sodium light of wavelength `5890Å`. On screen the fringes have an angular width `0.20^(@)`. Now the wavelength of light is changed and it is found that fringe width increases by 10%, the new wavelength of incident light is :