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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

How many photons per second are emitted by the antenna of a microwave oven, if its power output is 1.00 kW at a frequency of 2560 MHz?

To determine

The photons per second are emitted by the antenna of a microwave oven, if its power output is 1.00 kW at a frequency of 2560 MHz

Explanation

Given info:

  p=1.00×103 W

  h=6.63×1034 Js

  f=2560×106 Hz

Calculation:

Substituting the given values of joule in term of electron volt, we get

  1J=11.6×1019 eV

Energy of one photon in term of frequency and Planck's constant, we get

  E=hf  

Substituting the values of frequency and Planck's constant, we get

  E(6.63×1034 J.s)(2560×106 Hz)E(1

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