Two sources emit beams of microwaves. The microwaves from source A have a freque

Question

Two sources emit beams of microwaves. The microwaves from source A have a frequency of 10 GHz, and the ones from source B have a frequency of 20 GHz. This is all we know about the two beams. Which of the following statements about these beams are correct? A photon in beam B has twice the energy of a photon in beam A. Beam B carries twice as many photons per second as beam A. A photon in beam B has the same energy as a photon in beam A. The intensity of beam B is twice as great as the intensity of beam A. None of the above statements are true.

Explanation / Answer

A) A photon in beam B has twice the energy of a photon in beam A

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