Give the expression for the fringe widh in Young's experiments.

If you move the source slit closer to the double slit in Young's experiment, what will be effect on the fringes?

Give an expression for the resolving power of microscope.

What is the effect on the interference fringes in Young's double slit experiment when the monochromatic source is replaced by a source of white light?

Write the experimental procedure of Young's experiment.

A beam of light consisting of two wavelengths 6500 A ˙ and 5200 A ˙ is used to obtain fringes in a Young's double slit experiment.Find the distance of the third bright fringe on the screen from central maximum for the wavelength 6500 A. The distance between the slits is 2mm and the distance between the plane of the slits and the screen is 120 cm

Give the schematic arrangment of the Geiger Marsden experiment.