What Is the Frequency $\nu$ In Hertz) of the Photons Emitted by a HeNe Laser

question 139

Multiple Choice

What is the frequency ( $\nu$ in hertz) of the photons emitted by a HeNe laser with a wavelength ( $\lambda$ ) of 632.8 nm?

• A)4.738 * 10⁵ Hz
• B)1.897 * 10² Hz
• C)1.897 * 10¹¹ Hz
• D)4.738 *10¹⁴ Hz
• E)1.897 *10¹⁴ Hz

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Definitions:

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