List of top Physics Questions on Youngs double slit experiment asked in CUET (UG)

In Young’s double slit experiment, an interference pattern is obtained on the screen.If one of the slits is closed, then :

In young's double slit experiment, the separation between slits is halved and distance between this sleets and screen is doubled.The Fringe width will be :

In Young’s double slit experiment the Fringe width is 0.4 mm. if the whole apparatus is immeresed in water of refractive index 4 / 3 without changing its geometry the new Fringe width will be :