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Manipal Entrance Test 2019 Physics Paper

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Question : 26

Total: 50

In Young's double slit experiment the wavelength of light was changed from 7000 Å to 3500 Å. While doubling the separation between the slits which of the following is not true for this experiment?

The width of the fringes changes
The colour of bright fringes changes
The separation between successive bright fringes changes
The separation between successive dark fringes remains unchanged

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