In young's double slit experiment, the distance of the n-th dark fringe from the centre is

In the Youngs double slit experiment, the distance of pth dark fringe from the central maximum

In Young's double slit experiment, the interference bright fringes are of:

In Young's double slit experiment, the 10th bright fringe is at a distance x from the central fringe. Then a) the 10th dark fringe is at a distance of 19x//20 from the central fringe b) the 10th dark fringe is at a distance of 21x//20 from the central fringe c) the 5th dark fringe is at a distance of x//2 from the central fringe. d) the 5th dark fringe is at a distance of 9x//20 from the central fringe.

In young's double slit experiment, if the distance between the slits is halved and the distance between the slits and the screen is doubled, the fringe width becomes