Question

Question 9 (1 point)

Numerous devices utilize the electromagnetic spectrum, such as radios, cell phones, and medical equipment. When devising a device reliant on the electromagnetic spectrum, which category of waves would offer the highest energy to the device?

a
waves that have shorter wavelengths and lower frequencies
b
waves that have shorter wavelengths and higher frequencies
c
waves that have longer wavelengths and lower frequencies
d
waves that have longer wavelengths and higher frequencies

Answer 1

Answer: b

Explanation: Photon energy is proportional to frequency (E = hf) and inversely proportional to wavelength (E = hc/λ), so waves with higher frequency and shorter wavelength deliver the most energy.