Light falling normally on a 800 linecm grating produces a
Light falling normally on a 800 line/cm grating produces a spectrum that contains three lines in the second order (m=2) at angles of 31.2 degree,36.4 degree,47.5 degree. Decide the wavelengths responsible.
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light falling normally on a 800 linecm grating produces a spectrum that contains three lines in the second order m2 at
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