two wavelengths of light λ1 and λ2 are sent through a Young's double slit apparatus simultaneously. What must be true concerning λ1 and λ2 if the third order λ1 bright fringe is to coincide with the fourth order λ2 fringe?
two wavelengths of light λ1 and λ2 are sent through a Young's double slit apparatus simultaneously. What must be true concerning λ1 and λ2 if the third order λ1 bright fringe is to coincide with the fourth order λ2 fringe?