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In Young’s double slit experiment the source is white light. One slit is covered with red filter and the other with blue filter. There shall be

In Young’s double slit experiment the source is white light. One slit is covered with red filter and the other with blue filter. There shall be Correct Answer No interference

CONCEPT:

  • When two light waves from different coherent sources meet together, then there is a distribution of energy in which one wave is disturbed by the other is called interference of light.

There are two conditions for the interference of light:

  • Both the sources should be coherent (they must emit a light wave of constant phase difference.)
  • The wave should be monochromatic (the light must be of same wavelength).

EXPLANATION:

  • When white light fall on two different coloured filter- blue and red then it will emit two different light rays.
  • One light ray will be red and another will be blue.
  • Both the blue and red light have different wavelength, so their wavelengths are different and they are not monochromatic waves.
  • Since for the interference to happen, there must be monochromatic waves.
  • So there will not be any interference here in this case. Hence option 4 is correct.
  • Since there is no interference, so no fringes will form.

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