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A diffraction grating with slits separated by 3.40 x 10-6 m is illuminated by light with a wavelength of 589 nm.
The separation between lines in the diffraction pattern is 0.25 m.
What is the distance among the diffraction grating and the screen?
It is an instrument used to detect small current passing by it by showing deflection. Galvanometers are of dissimilar types e.g. moving coil galvanometer, moving magnet galvanomete
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