The distance of `n^(th)` bright fringe to the `(n+1)^(th)` dark fringe in Young's experiment is equal to:

The distance of nth bright fringe to the nth dark fringe in Young's experiment is equal to

The distance of nth bright fringe to the nth dark fringe in Young's experiment is equal to

The distance of n^(th) bright fringe from the centre of the interference pattern is

In Young's double -slit experiment, the slits are 0.5 cm apart and screen is 1m away. The slits are illuminated by sodium light of wavelength 6890 Å . What will be the distance between 3^(rd) bright fringe on one side and 4^(th) bright fringe on other side of central fringe.

The distance between 7th bright firnge and 17th dark fringe is 1.9 cm in an Interference fringe pattern. Find the fringe width

Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8^(th) bright fringe in the medium lies where 5^(th) dark fringe lies in air. The refractive index of the medium is nearly