Which is higher in energy, FM radio waves with a frequency of 1.015 × $10^{8}$ Hz (101.5 MHz) or visible green light with a frequency of 5 × $10^{14}$ Hz?

S t r a t e g y

Remember the equations ε = hν and ε = hc/λ, which say that energy increases
as frequency increases and as wavelength decreases.

Question

Which is higher in energy, FM radio waves with a frequency of 1.015 × [latex]10^{8}[/latex] Hz (101.5 MHz) or visible green light with a frequency of 5 × [latex]10^{14}[/latex] Hz?

S t r a t e g y

Remember the equations ε = hν and ε = hc/λ, which say that energy increases
as frequency increases and as wavelength decreases.

Accepted Answer

Since visible light has a higher frequency than radio waves, it is higher in energy.

Question 10.3: Which is higher in energy, FM radio waves with a frequency o...

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