Red Laser light has a wavelength of a) 630.8 nm b) 630 cm c) 632.8 nm d) 639.9 nm

Red Laser light has a wavelength of
a) 630.8 nm b) 630 cm c) 632.8 nm d) 639.9 nm
by

1 Answer

Answer :

c) 632.8 nm
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