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AP® Physics 1 & 2

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Refraction: Hydrogen Alpha Frequency

APPH12-OM6YQE

The red light from the hydrogen emission spectrum is the hydrogen -alpha line with a wavelength of 656.3 nanometers.

This wavelength is sent through water with an index of refraction of 1.33

Which of the following best represents the frequency of the red light in the water?

A

$3.44\times { 10 }^{ 14 }\text{ Hertz}$

B

$4.57\times { 10 }^{ 14 }\text{ Hertz}$

C

$6.08\times { 10 }^{ 14 }\text{ Hertz}$

D

$8.08\times { 10 }^{ 14 }\text{ Hertz}$