White light containing wavelengths from 400 nm to 700 nm falls on a grating with 9000 lines/cm. How wide is the first-order spectrum on a screen 2 m away?
White light containing wavelengths from 400 nm to 700 nm falls on a grating with 9000 lines/cm. How wide is the first-order spectrum on a screen 2 m away?
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White light containing wavelengths from 400 nm to 700 nm falls on a grating with 9000 lines/cm. How wide is the first-order spectrum on a screen 2 m away?
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