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A television remote control uses infrared light with a wavelength of 940 nm. What is the frequency of the light?
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A television remote control uses infrared light with a wavelength of 940 nm. What is the frequency of the light?

User Victor Company
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1 Answer

2 votes

Answer:

Frequency = 3.19 * 10^14 Hz or 1/s

Step-by-step explanation:

Relationship b/w frequency and wavelength can be expressed as:

C = wavelength * frequency, where c is speed of light in vacuum which is 3.0*10^8 m/s.

Now simply input value (but before that convert wavelength into meters to match the units, you do this by multiply it by 10^-9 so it will be 940*10^-9)

3.0 * 10^8 = Frequency * 940 x 10^-9

Frequency = 3.19 * 10^14 Hz or 1/s

User Leilani
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