In physics, the energy of a photon is directly proportional to its frequency. The higher the frequency of a photon, the higher its energy. The photon energy formula is: Energy = h * f, where h is Planck’s constant and f is the frequency of the photon.

## How to find energy of a photon

The energy of a photon can be calculated in two ways: If the photon’s frequency is known, we can use the formula E = h f . Max Planck proposed this equation, which is why it is known as **Planck’s equation**. If the photon’s wavelength is known, the photon’s energy can be calculated using the formula E = h c λ .

To find a photon’s energy using **Planck’s equation**, we need to know the value of Planck’s constant. Planck’s constant has a value of 6.62607004 x 10-34 m^2 kg / s. Once we have this value, we can plug it into the equation along with the frequency of the photon.

Finding the energy of a photon using its wavelength is slightly different.Instead of Planck’s constant, we need to know the speed of light in a vacuum, which has a value of 299,792,458 m/s. From there, we can plug those values into the equation and solve for the energy.

**There are a few things to keep in mind when calculating a photon’s energy:**

- Both wavelength and frequency are measured in meters.
- C, the speed of light in a vacuum, is in units of meters per second. When dealing with very small values like nanometers or picometers, it can be helpful to use scientific notation.

## What is the energy in a photon?

The energy of a photon is given by the equation E = hf, where E is energy, h is Planck’s constant, and f is frequency. This equation tells us that as the frequency of radiation increases (wavelength decreases), the photon energy increases.

This means that high-frequency photons, such as gamma rays, have more energy than low-frequency photons, such as radio waves. The amount of energy in a photon is also related to its wavelength; shorter wavelength photons have more energy than longer wavelength photons.

**The energy of a photon is also related to its frequency**; higher frequency photons have more energy than lower frequency photons. This is because higher frequency waves have shorter wavelengths, and therefore more waves fit into a given space.

**In conclusion, **the energy in a photon is related to its wavelength and frequency.

#### What is the energy of a photon of wavelength 12400 A?

Planck’s equation states that the energy of a photon is directly proportional to its frequency.

Using this formula, we can calculate that the energy of a photon with a wavelength of 12400 A is 1 eV.

To find the energy of a photon in general, **we can use the following equation:**

**E** = (12400)/(wavelength in A)

This equation shows that the energy of a photon is inversely proportional to its wavelength.

Therefore, the shorter the wavelength, the higher the energy.

## What is the energy of a 200 nm photon?

The energy of a 200 nm photon is 9.93×10−19J 9.93 × 10 − 19 J or equivalently 6.20eV 6.20 e V .

**This energy is produced by the electromagnetic radiation from the sun**. This radiation is made up of different types of photons, each with their own energy levels. The 200 nm photons make up a very small portion of this electromagnetic radiation.

The energy of the **200 nm photons is so high because they have a very short wavelength**. This short wavelength allows them to penetrate the atmosphere and reach the ground. The energy of these photons is high enough to damage living tissue, which is why we must be careful when exposed to them.

We can protect ourselves from the harmful effects of these photons by wearing sunscreen or staying out of the sun during peak hours. There are also filters that can be used to block out these photons.

#### What is the energy of photons with a wavelength of 434 nm?

The energy of photons with a wavelength of 434 nm is 4.58×10−19 J. The importance of the photon’s energy lies in its ability to produce certain physical and chemical changes. For example, the energy of a photon can be used to ionize an atom or molecule, exciting an orbital electron and creating an ion pair. Additionally, the energy of a photon can be used to create or break chemical bonds.

## What is photon formula?

The photon energy formula is simple: E = hc / λ, where h is Planck’s constant, c is the speed of light, and λ is the photon’s wavelength. Put another way, a photon’s wavelength λ is inversely proportional to its energy E. This relationship between energy and wavelength is true for all electromagnetic waves, including radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays.

#### What does this mean in terms of light and photons?

A photon is a particle of light, and its energy is proportional to its frequency. The higher the frequency of light, the higher its energy. For example, X-rays have a higher frequency (and thus energy) than visible light.

**The spectrum of visible light spans from red to violet**; each color corresponds to a different photon energy. Red light has the lowest energy, while violet light has the highest. The colors in between have energies that fall somewhere in between.

**One final note**: the term “photon” was first used by chemist Gilbert N. Lewis in 1926. Lewis also proposed the Lewis dot structures that are used in chemistry to this day.