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The energy in each photon (quantum) of electromagnetic radiation is

(h) x (c) / (wavelength)

h = Planck's Konstant
c = speed of light

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Q: How do you find energy when given wavelength?
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How do you find wavelength if you've been given the energy?

The easiest way would be to find a descriptive article on the internet that shows the visible colors spread out with some wavelengths labeled. There, you can find the approximate wavelengths for light of various colors. If you don't know the color of the light, then in order to find its wavelength, you'd need to know either its frequency or the energy of a photon (quantum). Energy of a photon = h f h = Planck's Konstant = about 6.63 x 10-34 joule-second f = frequency of the light wave or photon But the frequency is (speed of light)/(wavelength) so, Energy = h c/wavelength . If you know either the energy of the photon or its frequency, you can use this stuff to find its wavelength. In this discussion, I've toggled back and forth a few times between the frequency/wavelength of the quantum and the frequency/wavelength of the light wave. Don't worry. They're the same.


How do you find the energy of a photon?

You need to know the photon's frequency or wavelength. If you know the wavelength, divide the speed of light by the photon's wavelength to find the frequency. Once you have the photon's frequency, multiply that by Planck's Konstant. The product is the photon's energy.


What does the wave length of an EM wave tell about its energy?

Longer wavelength less energy and shorter wavelength equals more energy. This is because velocity (speed)=frequency x wavelength. And te velocity of all EM waves is the speed of light. we know the expression- frequency=speed of light(c)/wavelength Energy is given by- E=h*frequency=h*c/wavelength {h=Planck's constant} so,energy is directly proportional to frequency and inversly proportional to wavelength...that is energy increases with increase in frequency and decreases with increase in wavelength. example:-red color has more wavelength and hence has less energy.


How do you find wavelength of an alpha particle when given the velocity?

use de Broglie's wavelength: lambda = h/mv


What happens to a wavelength if no energy is supplied to it?

without energy there cannot be a wavelength.

Related questions

How are the wavelength and energy of electromagnetic radiation related?

The energy of one photon is given by its frequency X planck's constant Its frequency is given by the speed of light divided by the wavelength.


How do can you find the energy of a wavelength?

Electromagnetic energy is E=hc/w where w is the wavelength. E= .2E-24 Jm/w.


How do you find wavelength if you've been given the energy?

The easiest way would be to find a descriptive article on the internet that shows the visible colors spread out with some wavelengths labeled. There, you can find the approximate wavelengths for light of various colors. If you don't know the color of the light, then in order to find its wavelength, you'd need to know either its frequency or the energy of a photon (quantum). Energy of a photon = h f h = Planck's Konstant = about 6.63 x 10-34 joule-second f = frequency of the light wave or photon But the frequency is (speed of light)/(wavelength) so, Energy = h c/wavelength . If you know either the energy of the photon or its frequency, you can use this stuff to find its wavelength. In this discussion, I've toggled back and forth a few times between the frequency/wavelength of the quantum and the frequency/wavelength of the light wave. Don't worry. They're the same.


How do you find the energy of a photon?

You need to know the photon's frequency or wavelength. If you know the wavelength, divide the speed of light by the photon's wavelength to find the frequency. Once you have the photon's frequency, multiply that by Planck's Konstant. The product is the photon's energy.


What does the wave length of an EM wave tell about its energy?

Longer wavelength less energy and shorter wavelength equals more energy. This is because velocity (speed)=frequency x wavelength. And te velocity of all EM waves is the speed of light. we know the expression- frequency=speed of light(c)/wavelength Energy is given by- E=h*frequency=h*c/wavelength {h=Planck's constant} so,energy is directly proportional to frequency and inversly proportional to wavelength...that is energy increases with increase in frequency and decreases with increase in wavelength. example:-red color has more wavelength and hence has less energy.


How do you find the period of a wave if you are given the wavelength?

You cannot because there is not sufficient information.


How do you find wavelength of an alpha particle when given the velocity?

use de Broglie's wavelength: lambda = h/mv


What happens to a wavelength if no energy is supplied to it?

without energy there cannot be a wavelength.


What does the wavelength of an EM wave tell about its energy?

The shorter the wavelength of a wave, the higher its energy.


How are the energy and wavelength radiation related?

Energy and wavelength are related by Planck's Energy formula E = hf = hc/w where w is the wavelength.


How does the energy associated with waves change wavelength changes?

a shorter wavelength means lower energy. A shorter wavelength means high energy


How much energy does a wavelength have if it has a wave of 3.01x10-9m?

A wavelength doesn't have energy. The wave does. The details depend on the type of wave. Assuming an electromagnetic wave, you have to multiply the frequency by Plank's constant. To find the frequency, divide the speed of the wave by the wavelength.