Calculate the frequency of red light of wavelength 700 nm in a vacuum.

Frequency of red light of wavelength 700 nm:

The frequency of light is given by the formula:

f=c/λ

Where:

  • c=3×108 m/s (speed of light),
  • λ=700 nm=700×10−9 m

Substitute the values:

f=3×108/700×10−9=3×108/7×10−7=4.29×1014 Hz

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