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When light over a cretain frequency hits a conducting metal with lots of delocalised electrons, it transfers a lot of energy, and after a while it will start emmitting electrons. The only condition is f>fo (i.e the frequency is bigger than the minimum frequency). The minimum frequency is about 540nm- about green visible light. The rate of emmission can be changed with a circuit with an anode and a cathode on either end of the photoelectrisising metal.
The effect can be demonstrated with a Gold Leaf electroscope. Before light is shone, the whole electroscope is neutral, and the gold leaf is stationary. When the electroscope loses electrons in from photoectrisisng the gold leaf is repelled as they now have opposite charge.
The effect has many uses, including solar power.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoThe Photoelectric effect is when a photon (light particle) hits an atom and then the electrons jump off. When the photon comes out of the atom the electrons go back into the atom.
Wiki User
∙ 11y agoThe root "photo" means light."synthysis" means process
Wiki User
∙ 15y agoPhotosynthesis causes electrons to flow like the photoelectric effect. The electron flow in photosynthesis results in synthesis of materials.
Wiki User
∙ 9y agoThis process is very important for us. Plants make foods by photosynthesis. Photo equals to light.
Wiki User
∙ 10y agoYes, it certainly can. For a long time it couldn't, but
finally Einstein did, and he got a Nobel Prize for it.
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Will indium display the photoelectric effect with UV light?
yes it will
Why cesium and potassium used in photoelectric effect?
The ionization enthalpy of K and Cs is less than that of Li and therefore these metals easily lose electrons on exposure to light than lithium.That's the reason potassium and cesium are used in photoelectric cells rather than Cs.
Why does the color of the light source determine whether the photoelectric effect will occur?
it doesn't matter how bright the light is in order to break free the electrons from the substrate but the kind of colour used is very important.This is because electron will start to move when light is up close to the blue end of the spectrum.
What is the minimum amounth of energy required for a reaction occur?
The minimum amount of energy needed for a reaction to take place is called the activation energy.
How did the discovery of electrons shows that there are also positively charged parts of the atom?
The discovery of the electron proved the positive charge of the atom when sending an electric spark across an air gap from one electrode to another, called the photoelectric effect.
Which phenomenon demonstrates a particle nature of light?
The particle nature of light is illustrated by the photoelectric effect.
What did photoelectric effect prove?
The photoelectric effect proves that light is composed of quanta called photons (packets of enegy) and therefore proves the Photon Theory composed by Einstein.
Match the experimental conditions applied to the photoelectric effect observed.?
conditions of photoelectric effect
What is the inverse process of photoelectric effect?
I think X-rays are the reverse process of photoelectric effect.
What does light produce in a photoelectric effect?
When the light combine with the speed in a photoelectric effect it produces a picture of the object.
What percents of xrays are produced in a photoelectric effect?
The amount of xrays produced in a photoelectric effect varies. . . . alot.
Can photoelectric effect done in vaccum?
Certainly, of course, and you betcha. The presence of air has no function or involvement in the photoelectric effect.
Who won the Nobel Prize for explaining the photoelectric effect?
Explaining the photoelectric effect wonEinstein a Nobel Prize in 1921.
What was albert contribution to your understanding of the photoelectric effect?
he described light as little packets called photons
What is Einstein photoelectric effect?
Einstein's photoelectric effect work found that the incident light involved in the photoelectric effect was made of individual quanta (photons) that interacted with the metal's electrons like discrete particles, not waves.
The region where electrically charged ions are formed as a result of the absorption of solar energy is called the?
photoelectric effect
The emission of electrons from metal caused by light striking the metal is called?
Photoelectric effect.===================================== This phenomenon was discovered by Albert Einstein, for which he received the Nobel Prize for Physics. The solar cells that we use today is a direct application of the photoelectric effect, as the special metal absorbs Sun's photons and gives off electron (and the flow of electrons generates an electric current).
