A parallel beam of monochromatic light is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. Show that if the incident beam makes an angle `theta=sin^-1(lamda/(2d))` with the normal to the plane of the slits, there will be a dark fringe at the centre Po of the pattern.

A parallel beam of monochromatic light is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. If the incident beam makes an angle theta = sin^(-1)((lambda)/(2d)) with the normal to the plane of the slits, there will be .....at the centre P_(0) of the pattern.

A parallel beam of monochromatic light of wacelength lambda used in a Young's double slit experiment. The siits are separated by a distance d and the screen is placed parallel to the plane of the slits. The incident beam makes an angle theta=sin^(-1)((lambda)/(2d)) with the normal to the slits. A transparent sheet of refractive index 'mu' and thickness t=(lambda)/(2(mu-1)) is introduced infront of one of the slit. find the intensity at the geometrical centre.

Using monochromatic light of wavelength lamda in Young's double slit experiment, the eleventh dark fringe is obtained on the screen for a phase difference of _____.

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

In the Youngs double slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled, the fringe width will be :