two thin parallel slits are made in an opaque sheet of film when a monochromatic beam of light is shone through them at normal incidence , the first bright fringes in the transmitted light occur at 45° (both sides of central maximum) with the original direction of light beam on a distant screen when the apparatus is in air When the apparatus is immersed in a liquid the same bright fringe now occur at 30° The index of refraction of the liquid is
here ans will be sin45° or sin45°
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sin 30° sin60°
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UP 0 DOWN 0 0 0
