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What is the kinetic energy of the emitted electrons when the cesium is exposed to UV rays of frequency 1.1times 1015Hz?
Wiki User
∙ 6y ago
Before you can do anything with kinetic energy, you must know the kinetic energy equation. The equation for kinetic energy KE=hv-hv0.
Wiki User
∙ 10y ago
Wiki User
∙ 13y ago186.6999666
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When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
If the intensity of the blue light is increased, the number of electrons emitted from the clean surface of potassium metal will also increase. This is because higher intensity light provides more energy to the electrons on the surface, allowing more electrons to overcome the work function of the metal and be ejected.
What device gives off electrons when light shines on a metal surface?
There is the photoelectric effect, which is the process that emitts electrons from a metals surface when light of a certain frequency shines on the surface. In the metal, the nuclei are surrounded by electrons, so when the incoming electrons strike the surface, they pull apart from the electrons of the metal because of how like charges detract from each other.
When food is exposed to air it can lose electrons this loss of electrons creates reactive molecules that work to destroy the chemical bonds in the food causing it to spoil what are these molecules cal?
Free radicals
When food is exposed to air it can lose electrons. This loss of electrons creates reactive molecules that work to destroy chemical bonds in the food causing it to spoil. What are these molecules calle?
You think probable to oxidants
What staining procedures are needed to visualize the capsule of a bacterial cell?
The organisms are stained with fluorochromes, and when exposed to ultraviolet, violet, or blue light they become a bright image resulting from the fluorescent light emitted by them. This exposes the capsule.
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency?
The kinetic energy of the emitted electrons can be calculated using the formula: ( KE = hf - \phi ), where ( KE ) is the kinetic energy, ( h ) is Planck's constant, ( f ) is the frequency of the UV rays, and ( \phi ) is the work function of cesium.
What is photoelectric emission effect?
The photoelectric emission effect is a phenomenon where electrons are emitted from a material when it is exposed to light, typically of high enough frequency (i.e., energy) to cause electrons to be ejected from the material's surface. This effect is important in technologies like solar cells and photomultiplier tubes.
What did the photo electric experiment demonstrate?
The photoelectric effect experiment demonstrated that electrons are emitted from a material when it is exposed to light of a certain frequency, regardless of the light's intensity. This discovery contributed to the development of quantum theory and helped support the idea that light behaves as both a wave and a particle.
What happens to electrons in the photo electric effect?
Electrons are ejected from a metal surface when it is exposed to light of sufficient energy. This phenomenon is known as the photoelectric effect. The energy of the incident light is absorbed by the electrons, causing them to be emitted from the metal surface.
What do scientist using classical Newtonian expect to observe during a photoelectric effect?
Scientists using classical Newtonian physics would expect to observe a gradual increase in the kinetic energy of emitted electrons when exposed to increasing light intensity in the photoelectric effect. They would also expect the emission of electrons to start immediately upon exposure to light, regardless of its frequency.
What is the emission of colored light rays during exposure to ulraviolet light?
When certain substances are exposed to ultraviolet light, they can emit visible light in different colors. This phenomenon is called fluorescence. The emitted light is usually of lower energy and longer wavelength compared to the UV light that triggers it.
When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
If the intensity of the blue light is increased, the number of electrons emitted from the clean surface of potassium metal will also increase. This is because higher intensity light provides more energy to the electrons on the surface, allowing more electrons to overcome the work function of the metal and be ejected.
Do radio and microwaves produce photoelectric effect?
No, radio waves and microwaves do not produce the photoelectric effect. The photoelectric effect is the phenomenon where electrons are emitted from a material when it is exposed to light of sufficient frequency (typically ultraviolet or higher). Radio waves and microwaves have lower frequencies and energies than light, so they are not capable of causing the photoelectric effect.
What is a photoelectric in physics?
Photoelectric effect is where electrons are emitted from a material when it is exposed to light. This phenomenon proves that light can behave as both a wave and a particle (photon). It is a key concept in understanding the interaction of light with matter.
Why is visible light given off when a salt such as sodium chloride is exposed to a flame?
When a salt like sodium chloride is exposed to a flame, the high temperature causes the electrons of the metal ions (such as sodium) to become excited. As the electrons return to their ground state, they release energy in the form of light. This visible light is the characteristic color emitted by the specific metal ions present in the salt.
What is the photoelectric effect?
The photoelectric effect is the phenomenon where electrons are emitted from a material when it is exposed to light or electromagnetic radiation. This effect was explained by Albert Einstein in 1905 and is a key principle in understanding the behavior of light and electrons.
What are the Differences between thermionic emission and photoelectric emission?
Thermionic emission involves the release of electrons from a heated material, while photoelectric emission involves the release of electrons from a material exposed to light. Thermionic emission is dependent on temperature, while photoelectric emission is dependent on the frequency of the incident light. Both processes involve the emission of electrons, but they are triggered by different stimuli.
