Light of wavelength 600 nm in vacuum has frequency approximately
A5 × 10¹⁴ HzCORRECT
B2 × 10¹⁵ Hz
C3 × 10⁸ Hz
D600 Hz
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f = c/λ = (3 × 10⁸) / (600 × 10⁻⁹) = 5 × 10¹⁴ Hz.
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