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

When a thin transparent plate of thickness t and refractive index mu is placed in the path of one the two interfering waves of light, then the path difference changes by

A beam of light is converging towards a point. A plane parallel plate of glass of thickness t, refractive index mu is introduced in the path of the beam. The convergent point is shifted by (assume near normal incidence) :

Interference pattern with Young's double slits 1.5mm apart are formed on a screen at a distance 1.5m from the plane of slits. In the path of the beam of one of the slits, a transparent film of 10 micron thickness and of refractive index 1.6 is interposed while in the path of the beam from the older slit a transparent film of 15 micron thickness and of refractive index 1.2 is interposed. Find the displacement of the fringe patten.

Interference pattern with Young's double slits 1.5mm apart are formed on a screen at a distance 1.5m from the plane of slits. In the path of the beam of one of the slits, a transparent film of 10 micron thickness and of refractive index 1.6 is interposed while in the path of the beam from the older slit a transparent film of 15 micron thickness and of refractive index 1.2 is interposed. Find the displacement of the fringe patten.

A beam of light is converging towards a point. A plane parallel plate of glass of thickness t, refractive index  is introduced in the path of the beam. The convergent point is shifted by (assume near normal incidence) :

Young's double-slit experiment is conducted in water (mu_(1)) as shown in figure and a glass plate of thickness t and refractive index mu_(2) is placed in the path of S_(2) . Find the magnitude of the optical path difference at 'O'.

A ray of light from a monochromatic point source of light is incident at a point on the screen. If a thin mica film of thickness t annd refractive index n is introduced in its path, then the optical path

A YDSE is conducted in water (mu_(1)) as shown in figure. A glass plate of thickness t and refractive index mu_(2) is placed in the path of S_(2) . The optical path difference at O is

A beam of light is converging towards a point P on a screen. A plane parallel plate of glass of thickness in the direction of beam = t , refractive index = n is introduced in the path of the beam. The convergence point is shifted by