What is the speed of an EM wave in space that has a frequency of 2.328×10^17 Hz? For the following problems, you can assume that the speed of sound is 340 m/s.

1 Answer
Junaid Mirza
May 12, 2018

#3 × 10^8\ "m/s"#

Explanation:

Speed of an electromagnetic wave is #3 × 10^8\ "m/s"#

Speed, wavelength and frequency are related as

#"v = f λ"#

To prove that the speed of EM wave is #3 × 10^8\ "m/s"#, wavelength of the wave is not mentioned.
Speed of sound in question is irrelevant. Sound is not EM wave.

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