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Question 20207
JEE Physics · Medium

Electromagnetic Waves and Wave Optics: YDSE — White Light MCQ

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YDSE — White LightMediumQuestion 20207

Question

In YDSE with white light, the central maximum is:
  1. A
    Coloured (spectrum)
  2. B
    White
    Correct
  3. C
    Dark
  4. D
    Violet only

Correct answer

White

Explanation

At the centre (path difference = 0), all wavelengths interfere constructively → all colours combine → white central maximum. Adjacent fringes are coloured because different wavelengths have different fringe spacings.

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