When a thin sheet of a transparent material of thinkness `7.2xx10^(-4)`cm is introduced in the path one of the interfering beams, the central fringe shift to a position occupied by the sixth bright fringe. If `lambda=6xx10^(-5)` cm, find the refractive index of the sheet.

A thin sheet of glass (mu=1.520) is introduced normally in the path of one of the two interfering waves. The central bright fringe is observed to shift to position originally occupied by the fifth bright fringe. If lambda=5890Å . Find the thickness of the glass sheet.

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

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.

In a Young's experiment, one of the slits is covered with a transparent sheet of thickness 3.6xx10^(-3)cm due to which position of central fringe shifts to a position orginally occupied by 30th fringe. If lambda=6000 Å , then find the refractive index of the sheet.

In YDSE, the sources is red ligth of wavelength 7 xx 10^(-7) m . When a thin glass plate of refractive index 1.5 is put in the path of one of the interfering beams, the central bright fringe shifts by 10^(-3) m to the position previously occupied by the 5th bright fringe. What is the thickness of the 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 a young's double slit experiment, one of the slits is covered by a glass sheet of thickness 2.5xx10^(-5) m. Due to this, the position of the central bright fringe is shifted to position originally occupied by the 30th bright fringe. If lamda=5000 Å, then the refractive index of glass is

When a mica plate of thickness 0.1 mm is introduced in one of the interfering beams, the central fringe is displaced by a distance equal to 10 fringes. If the wavelength of the light is 6000 Å , the refractive index of the mica is

On placing a thin film of mica of thickness 12xx10^(-5)cm in the path of one of the interfering beams in young's double slit experiment using monochromatic light, the fringe pattern shifts through a distance equal to the width of a bright fringe. If lamda=6xx10^(-5)cm , the refractive index of mica is