NEET Physics Young's Double Slit MCQ Question
In a diagram depicting Young's Double Slit Experiment, two coherent light sources S1 and S2 are shown on a screen, separated by a distance 'd'. Another screen is placed at a distance 'D' from the slits where interference patterns are observed. If the central bright fringe is formed at point 'O' on the screen, what would be the reason for the appearance of the bright fringe at this point?
The path difference between light from S1 and S2 is zero.
The path difference between light from S1 and S2 is equal to one wavelength.
The path difference between light from S1 and S2 is equal to half a wavelength.
The path difference between light from S1 and S2 is equal to two wavelengths.
Correct Answer
Detailed Explanation
A bright fringe at the center occurs when the path difference between the two coherent sources is zero, leading to constructive interference.
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