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| Numerical - 26 |
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| 26. In Young's double slit experiment, we observe the 10th maximum for l = 1000o A. What will be visible if the source of light is replaced by light of wavelength 5000o A |
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| Suggested solution: |
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| If y10 be the distance of the 10th bright fringe from the central fringe, then, |
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| Let nth bright fringe be formed at the same place when the new wavelength is 5000 A |
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| But yn = y10 (given) |
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| On simplification, n=14 |
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| Thus, 14th order bright fringe will be visible at the same place where 10th order bright fringe was originally observed. |
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