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In a Young’s double-slit experiment using slits of unequal widths, the intensities on the screen due to the slits are in the ratio 4 : 9 when the slits are used separately. When they are used together, the ratio of the intensity at a dark fringe to the intensity at a bright fringe on the screen will be (a) 4 : 9 (b) 1 : 9 (c) 9 : 16 (d) 1 : 25 |
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Answer» Correct Answer is: (d) 1 : 25 |
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