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Light of wavelength 429 nm (in vacuum) is incident on a diffraction grating that has a...

Light of wavelength 429 nm (in vacuum) is incident on a diffraction grating that has a slit separation of 1.2 × 10-5 m. The distance between the grating and the viewing screen is 0.10 m. A diffraction pattern is produced on the screen that consists of a central bright fringe and higher-order bright fringes (see the drawing). (a) Determine the distance y from the central bright fringe to the second-order bright fringe. (Hint: The diffraction angles are small enough that the approximation tan(θ) ~ sin(θ) can be used.)(b) If the entire apparatus is submerged in water (nwater = 1.33), what is the distance y?

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t 33) 29nm di- 0-lom Valas AC) 322.556391 hm x /o-lom) ye 0.00 537593m |- (B) 31

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