In Young's Double slit experiment, if the spacing between the slit is doubled and the linear distance from the screen is reduced to one-half then the spacing between the two adjacent bright fringes will be _ of the actual value.
Correct answer: C. Reduce to one quarter.
- A. Remains same.
- B. Reduce to one half.
- C. Reduce to one quarter.
- D. Increase to twice.
Explanation
n=λD/dIf the slit spacing (d) is doubled and the distance between the slit and screen(D) is halved. The fringe spacing(x) becomes one-quarter.
This question appeared on the NUMS 2017 paper, which you can sit online with every answer explained.
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Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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