Monochromatic light of wavelength 667 n m is produced by a helium neon laser. The power emitted is
Channel: Ritesh Dahiya (RD Sir) (KDC) Kota Doubt Counter
Date: 2020-08-28

Monochromatic light of wavelength 667 n m is produced by a helium neon laser. The power emitted is 9 m W. 

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