NEETPhysics-Wave Optics
NEET Physics Interference MCQ Question
Type: MCQ-numerical-Medium-Class 12
In a double slit experiment the angular width of a fringe is found to be 0.2° on a screen placed 1 m away. The wavelength of light used is 600 nₘ. The angular width of the fringe if entire experimental apparatus is immersed in water, is Take μ_water = 4/3
A
0.15°
B
1°
C
2°
D
0.3°
Correct Answer
Option A
Detailed Explanation
The angular width decreases by a factor of the refractive index, so it becomes 0.15°.
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