Question

Im young 's double slit experiment using monochromatic light of wavelength lamda, the intensity of light at a point on the screen,where path difference is lamda k units.What is the intensity of light at a point where path difference is lamda by 3?

Answer 1

that's all there is regarding to relation between path different and intensity of light in young's double slit experiment, the distance between the slits is kept smaller than the wavelength of light.