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English, 03.03.2020 15:47 joewiii10

NO
4when a source of monochromatic light of wavelength 6.0 x 10-7 m is viewed 2.0 m away
through a diffraction grating two similar lamps are seen one on each side of it, each 0.00
away from it. Calculate the number of lines in the grating.
(5 marks)

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4when a source of monochromatic light of wavelength 6.0 x 10-7 m is viewed 2.0 m away
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