Question

The change in diffraction pattern of a single slit, when the monochromatic source of light is replaced by a source of white light will be

• A. Diffracted image is not clear
• B. Diffracted image gets dispersed into constituent colours of white light
• C. The image of the slit becomes infinitely wide
• D. Clear colourful fringe pattern

Answer 1

The correct option is B

Diffracted image gets dispersed into constituent colours of white light

When a source of white light is used instead of monochromatic source, the diffracted image of the slit gets dispersed into constituent colours of white light.The central maximum will be white and on either side of the central maximum there will be coloured fringes