Two Sources Emit Beams of Microwaves

question 27

Multiple Choice

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? (There could be more than one correct choice. )

• A)Beam B carries twice as many photons per second as beam A.
• B)A photon in beam B has twice the energy of a photon in beam A.
• C)The intensity of beam B is twice as great as the intensity of beam A.
• D)A photon in beam B has the same energy as a photon in beam A.
• E)None of the above statements are true.

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