Two glass plates of refractive indices 1.5 and 1.6 are introduced in the paths of the two interfering beams in an interference experiment.If the central fringe is not shifted.The ratio of the thickness of the plates is

A thin glass plate of refractive index 1.5 is introduced in the path of one of the interfering beam. As a result, the central bright fringe moves to a position previously occupied by the fifth bright fringe. If the wavelength of beam is 6.2 xx 10^(-5) cm , calculate the thickness of glass plate.

A thin sheet of glass (refractive index 1.5) of thickness 6 microns, introduced in the path of one of the interfering beams in a double-slit experiment shift the central fringe to a position earlier occupied by the fifth bright fringe. The wavelength of light used is

In YDSE, a glass slab of refractive index, mu= 1.5 and thickness 'l' is introduced in one of the interfening beams of wavelength lambda = 5000 A . If on introducing the slab, the central fringe shift by 2 mm, then thickness of stab would be (Fringe width, beta = 0.2 mm)

If a thin transparent plate is introduced, in the path of interfering waves, then entire fringe

In Young's double slit experiment, the fringes are displaced by a distance x when a glass plate of one refractive index 1.5 is introduced in the path of one of the beams. When this plate in replaced by another plate of the same thickness, the shift of fringes is (3/2)x. The refractive index of the second plate is

In an ideal YDSE when a glass plate ( mu =1.5) of thickness t is introduced in the path of one of the interfering beams the intensity at the position where the central maximum occured previously remains unchanged. The maximum thickness of the glass plate is:

In Fresnel's biprism experiment a mica sheet of refractive index 1.5 and thickness 6xx10^(-6)m is palced in the path of one of interfering beams as a result of which the central fringe gets shifted through five fringe widths. Then calculate the wavelength of light.

When the mica sheet of thickness 7 micros and mu=1.6 is placed in the path of one of interfering beams in the biprism experiment then the central fringe gets at the position of seventh bright fringe.The wavelength of light used will be

When a mica sheet of thickness 7 microns and mu=1.6 is placed in the path of one of interfering beams in the biprism expriment then the central fringe gets at the position of seventh bright fringe. What is the wavelength of light used?

Interference fringes are produced by a double slit arrangement and a piece of plane parallel glass of refractive index 1.5 is interposed in one of the interfering beam. If the fringes are displaced through 30 fringe widths for light of wavelength 6xx 10^(-5) cm , find the thickness of the plate.