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Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
Assertion : Interference pattern is made by using blue light instead of red light, the fringes becomes narrower.
Reason : In Young’s double slit experiment, fringe width is given by relation $B = \frac{\lambda \mathrm{D}}{\mathrm{d}}$.
  • ✓
    If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
    If assertion is true but reason is false.
  • D
    If the assertion and reason both are false.
✓

Answer

Correct option: A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

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