NEET2022Physics-Wave Optics
NEET 2022 Physics Young's Double Slit Experiment MCQ Question
Type: MCQ-numerical-Medium-Class 12
In a Young’s double slit experiment, a student observes 8 fringes in a certain segment of screen when a monochromatic light of 600 nₘ wavelength is used. If the wavelength of light is changed to 400 nₘ, then the number of fringes he would observe in the same region of the screen is:
A
9
B
12
C
6
D
8
Correct Answer
Option B
Detailed Explanation
The number of fringes is inversely proportional to the wavelength. Changing the wavelength to 400 nₘ increases the number of fringes to 12.
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