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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?

$5.88 \times 10^{26}$ photons/s

Physics 103

Chapter 29

Introduction to Quantum Physics

Quantum Physics

Simon Fraser University

Hope College

University of Winnipeg

Lectures

02:51

In physics, wave optics is…

10:02

Interference is a phenomen…

01:07

A 1000 kHz AM radio statio…

02:01

An FM radio transmitter ha…

01:09

03:08

An FM radio station broadc…

03:06

An AM radio station operat…

02:54

A microwave oven uses elec…

01:32

117. An AM radio transmitt…

02:31

A radio station broadcasts…

02:03

How many photons per secon…

02:07

01:58

01:31

A microwave oven produces …

00:33

What is the energy in joul…

02:29

$\bullet$ The predominant …

01:27

What is the frequency of a…

04:16

(a) How many photons are e…

02:39

A heat lamp produces 32.8 …

02:56

(a) If the power output of…

01:40

01:11

What are the wavelengths o…

and this problem. We're asked to calculate how many photons per second are admitted by the antenna of a microwave oven. If its power output is one killer, what? Which is one times 10 to the third? What's and has If you Quincy of 2560 mega hurts, which is 2560 attempts tend to the sixth hurt. So first we need to solve for how much energy this antenna is putting out. So we have energy equals planks, constant times, frequency now planks constant. We want to you use in jewels. So I'm gonna going to use 6.65 times 10 to the negative 34 jewels seconds multiplied by my frequency, which is 2560 times 10 to this sixth. And this gives me an energy of 1.7 0 to 4 times 10 to the negative 24. Jules, because the seconds cancel out with these hurts. And again, our power is equal to our energy per unit of time. So if we rearranged this to get won over tea by itself, this is going to give us a number of photons per second, so our power output, we said, was one times 10 to the third and our energy. We calculated to be 1.7 0 to 4 times 10 to the negative 24th to give us a number of 5.88 times 10 to the 26 photons, her second.

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