[" In Young's double slit experiment,white light is used.The separation between the slits is b.the "],[" screen is at a distance d(d>>b) from the slits.Some wavelengths are missing exactly in front of one "],[" slit.These wavelengths are "],[[" (1) "lambda=(b^(2))/(d)," (2) "lambda=(2b^(2))/(d)," (3) "lambda=(b^(2))/(3d)," (4) "lambda=(2b^(2))/(3d)]]

In Young's double-slit experiment, white light is used. The separation between the slits is d. The screen is at a distance D (D » d) from the slits. Some wavelengths are missing exactly in front of one slit. These wavelengths are

White light is used to illuminate the two slits in a Young's double slit experiment. The separation between the slits is b and the screen is at a distance d(gtgtb) from the slits. At a point on the screen directly in front of one of the slits, certain wavelengths are missing. Some of these missing wavelength are (a) lambda = b^2//d (b) lambda=2b^2//d (c) lambda = b^2//3d (d)lambda = 2b^2//3d .

In Young's double slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width is