In the experiment of two slots with distance d, one slit is covered by a glass tile with refractive index n = 1.5 and thickness δ. This causes the maximum brightness to shift. If λ=500nm, find δ so that the central maximum shifts to the position of the maximum of 1st order before we cover the slot.

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Q: Conducting an experiment with a 534-nm wavelength green laser, a researcher notices a slight shift…

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Q: In Young's double-slit experiment, the intensity of light on the observation screen is described by:…

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A: Answer :        Correct option is (c)  i .e width a equals to wavelength .

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.