In a YDSE setup interference fringes are obtained by sodium light of wavelength `5890Å`. On screen the fringes have an angular

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 :
A. `5896Å`
B. `7321Å`
C. `6300Å`
D. `6479Å`

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 t

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