When a thin film of thickness t is placed in the path of light wave emerging out of the slit, then increase in the length of optical path will be
(u-1)
(u +1)
`mut`
t

When a thin metal plate is placed in the path of one of the interfering beams of light

When a thin metal plate is placed in the path of one of the interfering beams of light

In a doulble slit experiment when a thin film of thickness t having refractive index mu is introduced in from of one of the slits, the maximum at the centre of the fringe pattern shifts by one width. The value of t is (lamda is the wavelength of the light used)

When the plastic thin film of refractive index 1.45 is placed in the path of one of the interfering waves then the central fringe is displaced through width of five fringes.The thickness of the film will be ,if the wavelength of light is 5890Å

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 were produced using light in a doulbe-slit experiment. When a mica sheet of uniform thickness and refractive index 1.6 (relative to air) is placed in the path of light from one of the slits, the central fringe moves through some distance. This distance is equal to the width of 30 interference bands if light of wavelength 4800 is used. The thickness (in mu m ) of mica is

If a thin mica sheet of thickness 't' and refractive index mu is placed in the path of one of the waves producing interference , then the whole interference pattern shifts towards the side of the sheet by a distance

In YDSE a thin film (mu=1.6) of thickness 0.01 mu m is introduced in the path of one of the two interfering beams. The central fringe moves to a position occupied by the 10th bright fring earlier. The wave length of wave is

When a transparent parallel plate of uniform thickness t and refractive index mu is interposed normally in the path of a beam of light, the optical path is

A plate of thickness t made of a material of refractive index mu is placed in front of one of the slits in a double slit experiment. (a) Find the changes in the optical path due to introduction of the plate. (b) What should be the minimum thickness t which will make the intensity at the center of the fringe pattern zero ? Wavelength of the light used is lamda . Neglect any absorption of light in the plate.