The slits in a Young’s double slit experiment have equal width and the source is placed symmetrically with respect to the slits. The intensity at the central fringe is I₀. If one of the slits is closed, the intensity at this point will be

When a drop of oil is spread on a water surface, it displays beautiful colors in daylight because of

Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio

A thin transparent sheet is placed in front of a Young’s double slit. The fringe-width wilt

If Young’s double slit experiment is performed in water,