MCQ
In a Young's double slit experiment, the source illuminating the slits is changed from blue to violet. The width of the fringes
  • A
    Increases
  • Decreases
  • C
    Becomes unequal
  • D
    Remains same

Answer

Correct option: B.
Decreases
b
(b)

$\beta=\frac{\lambda D}{d}$

If $\lambda$ decreases width of the fringes decreases.

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