- Does increasing intensity increase energy?
- Which photon has the least energy?
- Which color has the highest energy?
- Are photons pure energy?
- Does time exist for a photon?
- What affects the energy of a photon?
- What triggers the release of a photon of energy?
- Does a photon have infinite energy?
- Which property or properties of an electromagnetic wave affect S its ability to dislodge an electron from a metal?
- How do you tell if a photon is emitted or absorbed?
- Which photon has the highest energy?
- Where do photons get their energy?
- What determines the color of light?
- How many photons are contained in a flash of green light?
- Where do absorbed photons go?
- Does increasing frequency increase intensity?
- What happens when photons are absorbed?
- Why do photons move?
- What color is lowest in energy?
- What happens to the electron when the photon is absorbed?
- What happens when intensity is increased?
- Why are no electrons emitted below the threshold frequency?
- Which of the following occurs as the energy of photon increases?
- What is the energy of the emitted photon?
Does increasing intensity increase energy?
Increasing the light intensity (photon energy per second per unit area) increases the rate at which electrons leave the metal, and the electrons have more kinetic energy.
Changing the frequency of the light while keeping the intensity constant should not change the rate of electron emission..
Which photon has the least energy?
Radio waves have photons with the lowest energies. Microwaves have a little more energy than radio waves. Infrared has still more, followed by visible, ultraviolet, X-rays and gamma rays.
Which color has the highest energy?
violetWhen it comes to visible light, the highest frequency color, which is violet, also has the most energy. The lowest frequency of visible light, which is red, has the least energy.
Are photons pure energy?
A photon is “pure energy” in exactly the same way that any other fundamental particle is “pure energy”.
Does time exist for a photon?
Photons do not experience time. … From the perspective of a photon, there is no such thing as time. It’s emitted, and might exist for hundreds of trillions of years, but for the photon, there’s zero time elapsed between when it’s emitted and when it’s absorbed again. It doesn’t experience distance either.
What affects the energy of a photon?
The amount of energy is directly proportional to the photon’s electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. … The higher the photon’s frequency, the higher its energy. Equivalently, the longer the photon’s wavelength, the lower its energy.
What triggers the release of a photon of energy?
When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.
Does a photon have infinite energy?
The energy required to accelerate a massive particle to the speed of light is infinite, yes. Photons are massless, though, so they travel at the speed of light regardless of what amount of energy you put into them. … Energy moves at the speed of light, and everything else is relative to that.
Which property or properties of an electromagnetic wave affect S its ability to dislodge an electron from a metal?
photoelectric effectThe photoelectric effect. In the photoelectric effect, light waves (red wavy lines) hitting a metal surface cause electrons to be ejected from the metal.
How do you tell if a photon is emitted or absorbed?
Absorption and emission of light can reveal a lot about the structure of an atom. Absorbed light is light that isn’t seen while emitted light is light that is seen. Emission is when electrons return to energy levels. Absorption is when electrons gain energy and jump to higher energy levels.
Which photon has the highest energy?
Gamma raysEach section of the electromagnetic (EM) spectrum has characteristic energy levels, wavelengths, and frequencies associated with its photons. Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.
Where do photons get their energy?
Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum.
What determines the color of light?
The wavelength of visible light determines the color that the light appears. Light with the longest wavelength appears red, and light with the shortest wavelength appears violet. … The wavelengths of visible light that an object reflects or transmits determine the color that the object appears to the human eye.
How many photons are contained in a flash of green light?
Where do absorbed photons go?
The simplest answer is that when a photon is absorbed by an electron, it is completely destroyed. All its energy is imparted to the electron, which instantly jumps to a new energy level. The photon itself ceases to be.
Does increasing frequency increase intensity?
There are many ways of defining the intensity of light, but if you are just measuring the energy per unit time per unit area then yes increasing the frequency while keeping the number of photons constant will increase the intensity.
What happens when photons are absorbed?
The simplest answer is that when a photon is absorbed by an electron, it is completely destroyed. All its energy is imparted to the electron, which instantly jumps to a new energy level. The photon itself ceases to be. … The opposite happens when an electron emits a photon.
Why do photons move?
Light, even though it isn’t charged, behaves like a wave. As a photon moves through space, it exhibits oscillating electric and magnetic fields, and can interact with charged particles. These interactions slow it down, and cause it to move at a speed less than the speed of light as long as they’re in a material.
What color is lowest in energy?
RedThe frequency of the radiation is proportional to its energy and the wavelength of the radiation is inversely proportional to the energy. Red is the lowest energy visible light and violet is the highest. A solid object has color depending on the light it reflects.
What happens to the electron when the photon is absorbed?
When an electron is hit by a photon of light, it absorbs the quanta of energy the photon was carrying and moves to a higher energy state. … Electrons therefore have to jump around within the atom as they either gain or lose energy.
What happens when intensity is increased?
If the frequency of electromagnetic waves is higher than the extraction threshold of the metal and electrons are emitted from the metal surface, then an increase of light intensity will result in a proportional increase of electrical current of the electrical circuit where the emitted electrons are conveyed.
Why are no electrons emitted below the threshold frequency?
Light below a certain threshold frequency, no matter how intense, will not cause any electrons to be emitted. … The explanation for the photoelectric effect goes like this: it takes a certain energy to eject an electron from a metal surface. This energy is known as the work function (W), which depends on the metal.
Which of the following occurs as the energy of photon increases?
Which of the following occur as the energy of a photon increases? the speed increases.
What is the energy of the emitted photon?
The atom absorbs or emits light in discrete packets called photons, and each photon has a definite energy. Only a photon with an energy of exactly 10.2 eV can be absorbed or emitted when the electron jumps between the n = 1 and n = 2 energy levels….Energy Levels of Electrons.Energy LevelEnergy5-.54 eV4 more rows