A monochromatic light passes through a narrow slit and forms a diffraction pattern on a screen behind the slit. As the slit widt
h increases, the diffraction pattern: O becomes dimmer.
O shrinks with all the fringes getting narrower.
O spreads out with all the fringes getting alternately wider and then narrower.
O remains unchanged.
O spreads out with all the fringes getting wider.
As the light passes through the slit, the diffraction pattern shrinks, as the waves have more opening to penetrate, and the fringes becomes more narrow as a result of that, The opposite happens as the conditions are reversed.
