The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656...

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The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue) Light

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$Solution: (A) The slit width of the grating is, d ssolines/(mmSom) =1.82x10m The expression for diffraction condition is, d s$ The distance of the first order for red light is, }} = D tan sin mai.) I ((1)(656nm) com =(1.3m) tan sin? 1.82x10-m = 0.502

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