How would the angular separation of interfernece frings in Young's double slit experiment change when the distance of separation between the slits and the screen is doubled?

A beam of light consisting of two wavelegnths, 6,500 overset @A and 5,200 overset @A is used to obtain interference fringes in a Young's double slit experiment. The distance between the slits is 2 mm and the screen is 120 cm. What is the least distance from the central maximum, when the bright fringes due to both the wavelengths coincide?

How will the angular separation and visibility of fringes in Young's double slit experiment change when Width of the source-slit is increased.

A beam of light consisting of two wavelegnths, 6,500 overset @A and 5,200 overset @A is used to obtain interfrerence fringes in a Young's double slit experirmejnt.The distance between the slits and the screen is 120 cm. Find the distance of third bright fringe on the screen from the central maximum for the wavelength 6,500 overset @A .

What is the effect on interference pattern in Young's double slit experiment when separation between two slits is increased. Explain your answer in each case.

How does the fringe width of interfernce fringe change, when the whole apparatus of Young's experiment is kept in a liquid of refractive index 1.3?

What is fringe width ? Derive an expression for fringe width in Young's double slit experiment. What will happen if the distance between the two slits becomes nearly zero ?

What will happen to the interfernce pattern in Young's experiment,if the source is not exactly on the centre line between the slits?

How will the angular separation and visibility of fringes in Young's double slit experiment change when screen is moved away from the plane of the slits.