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Homework Help: How many photon/sec?

  1. Apr 18, 2010 #1
    How many photon/sec??

    An FM radio transmitter has a power output of 100 kW and operates at a frequency of 97.5 MHz. How many photons per second does the transmitter emit?
  2. jcsd
  3. Apr 18, 2010 #2
    Re: How many photon/sec??

    We will help you with your homework but we won't do your homework. :wink:
  4. Apr 18, 2010 #3
    Re: How many photon/sec??

    Ok, consider first that the power output of the transmitter is the energy released from the transmitter in a given time (in the form of photons) divided by that time, as in

    [itex]P_{ower of transmitter}=\frac{E_{nergy emitted}}{t_{ime}} [/itex] and think of the energy as a number of photons. Where do you get?
  5. Apr 20, 2010 #4
    Re: How many photon/sec??

    oh thanks i managed to solve it
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