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9.39*10^14 Hz is the threshold frequency of cesium.
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∙ 9y ago
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What is the thresh hold frequency of cesium?
The function of a photoelectric material is the energy that a photon of light must possess to just expel an electron from the surface of a material. The work function of cesium is 3.42 x 10^-19 Joules.Ê
What is the name for sulfur and cesium?
Cesium Sulfide
Is cesium a compound?
No, cesium is an element.
How Does Cesium Smell?
Cesium doesn't have a smell you need special equipment to detect Cesium.
Does cesium sink or float?
cesium will sink
What do cesium atoms quartz crystals and pendulums have in common?
They all keep time: Cesium atoms, quartz crystals, and pendulums all vibrate at a constant frequency (not the same frequency for each substance.) With current technology, cesium atoms are the most precisely constant.
What is threshold frequency?
Threshold frequency (fo) is minimum frequency at which electrons are ejected from a metal.
If the frequency of light is greater than the threshold frequency will photoelectric effect starts?
Yes - that's how it works.
How does threshold frequency relate to work function?
w=hf w-work funtion h-constant f-threshold frequency the work funtion is the minimum energy required to remove the electrons on the metal
How did Einstein used Plank' theory to explain the existence of threshold frequency?
mc2
When electromagnetic radiation above the threshold frequency falls on an object it emits electrons?
Hhn
Does photoelectric effect take place below threshold frequency?
The threshold frequency for photoelectric emission is the smallest possible frequency a photon can have to be absorbed/emitted by an electron moving between energy levels in an atom. Explanation: Since electrons can't exist /between/ energy levels, and each electron would be moved a very specific amount by any given photon, only photons of certain frequencies can be properly absorbed/emitted, necessitating a minimum frequency.
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency?
3.72*10^-19 j
What is threshold frequency in photoelectric effect?
It's the frequency at which each photon has the amount of energy required to separate an electron from an atom in the target substance.
The frequency of one type radiation emited by cesium-133?
Cesium 133 is the stable isotope of the family of cesium isotopes and thus has no nuclear radiation breaking out of its nucleus. The only radiation from cesium 133 would be an emission spectra data in the blue visible light zone with a few less intense lines across the visible spectrum.
How does photoelectric effect take place below threshold frequency?
It doesn't, and that's the whole big mysterious fact about the photoelectric effect that was standing Physics on its ear about 100 years ago. It doesn't matter how bright the light is, there's no photoelectric effect if the light is below the threshold frequency. And if it's above the threshold frequency, it doesn't matter how dim the light is, those electrons come streaming off of the surface of the target.
What is the threshold frequency in a photoelectric experiment is most closely related to?
The work function of the photoemissive metal.
