Question

A particular light source gives off light waves with a measured wavelength of

2. 0 X 10-7 m. What is the frequency of the light source?


a. ) 6. 67 X 10-15 Hz


b. ) 6. 0 X 1011 Hz


c. ) 1. 5 X 1015 Hz


d. ) Not enough information

Answer 1

The frequency of the light source is 1.5 x 10¹⁵ Hz.

Frequency of the light source

The frequency of the light source is determined using the following equations;

c = fλ

where;

c is speed of light

f is the frequency

λ is the wavelength

f = (3 x 10⁸) / (2 x 10⁻⁷)

f = 1.5 x 10¹⁵ Hz

Thus, the frequency of the light source is 1.5 x 10¹⁵ Hz.

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