In Young’s double slit experiment the wavelength of light was changed from $7000\;\mathop {{\rm A}\;to\;}\limits^ \circ \;3500\;\mathop {\rm A}\limits^ \circ $. While doubling the separation between the slits which of the following is not true for this experiment

The width of the fringes changes

The colour of bright fringes changes

The separation between successive bright fringes changes

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NEET UG PHYSICS MCQ: WAVE OPTICS

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In Young’s double slit experiment the wavelength of light was changed from

7000\;\mathop {\mathrm{A}\;to\;}\limits^ \circ \;3500\;\mathop \mathrm{A}\limits^ \circ

. While doubling the separation between the slits which of the following is not true for this experiment

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Correct option: D

The separation between successive dark fringes remains unchanged

Option D (The separation between successive dark fringes remains unchanged) is correct because when the wavelength is halved and the slit separation is doubled, the fringe width remains the same, so the separation between successive dark fringes also remains unchanged.

NEET UG PHYSICS MCQ: WAVE OPTICS

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