Suppose white light falls on a double sllit but one slit is covered by a violet filter (allowing `lamda=400nm`). Describe the nature of the fringe pattern observed.

White light is used in a Young's double slit experiment. Find the minimum order of the violet fringe (lamda = 400 nm) which overlaps with a red fringe (lamda = 700 nm) .

The intensity of the light coming from one of the slits in a Young's double slit experiment is double the intensity from the other slit. Find the ratio of the maximum intensity to the minimum intensity in the interference fringe pattern observed.

A Young's double slit apparatus has slits separated by 0.28 mm and a screen 48 cm away from the slits. The whole apparatus is immersed in water and the slits are illuminated by the red light ( lamda=700 nm in vacuum). Find the fringe-width of the pattern formed on the screen.

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 P_o of the pattern.

In Young's double slit experiment, the distance of the screen from the two slits in 1m. When a light of wavelength 600nm is allowed to fall on the slits width of the fringes obtained on the screen is 2mm. Calculate the width of the fringe if the wavelength of the incident light is 400nm. Calculate band width in each case if the arrangement is immersed in water of refractive index 1.33.

Monochromatic light of wavelenghth 600 nm is used in a Young's double sllt experiment. One of the slits is covered by a transparent sheet of thickness 1.8xx10^-5 m made of a material of refractive index 1.6. How many fringe will shift due to the introduction of the sheet?

In a Young's double slit experiment the separation between the slits is 0.10 mm, the wavelength of light used is 600 nm and the interference pattern is observed on a screen 1.0 m away. Find the separation between the successive bright fringes.

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 he optical path due to introduction of the plate. (b) Wht should be the minimum thickness t which will make the intensity at the centre of the fringe pattern zero ? Wavelength of the light used is lamda . Neglect any absorption of light in the plate.

In a young 's double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen, when light of wavelenght 600 nm is used. If the wavelenght of light is changed to 400 nm. Number of fringes observed in the same segment of the screen is given by

White light is passed through a double slit and interference pattern is observed on a screen 2.5 m away. The separation between the slits is 0.5 mm. The first violet and red fringes are formed 2.0 mm and 3.5 mm away from the central white fringe. Calculate the wavelengths of the violet and the red light.