Is photoelectric effect possible for non metals?
Explanation: Photoelectric effect is only for first group elements even for not all elements.So it doesn’t shown by non-metals also.
Why is the phenomena of photoelectric effect not observed in non metals?
Even though photoemission can occur from any material, it is most readily observed from metals and other conductors. This is because the process produces a charge imbalance which, if not neutralized by current flow, results in the increasing potential barrier until the emission completely ceases.
Is photoelectric effect same for all metals?
Hint: The different metals consist of different values of work function because of difference in their electronegativity behaviour. Therefore the work function is that amount of energy which is required to get an electron out of the metal plate without any kinetic energy….
| ELEMENTS | WORK FUNCTION (eV) |
|---|---|
| Zinc | 4.3 |
Which of the following does not show photoelectric effect?
Out of all the alkali metals hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), Cesium (Cs), and Francium (Fr), only lithium does not show any sort of photoelectric effect due to its high value of ionization energy.
Is it easier to remove an electron from sodium than from copper?
Explanation: It is harder to remove an electron from copper than sodium, the work function of copper is greater. As threshold wavelength is inversely proportional to the work function, its value will be more for sodium.
Why the photoelectric effect is not observed below the threshold frequency?
Photoelectric effect is not observed below threshold frequency. The kinetic energy of the electrons increases with increase in frequency of light used. The number of electrons ejected is directly proportional to the intensity of light.
Which of the following conditions photoelectric effect is not observed?
When a light source is directed at a metal surface, it is found under many circumstances that electrons are ejected from the surface. For low frequency light, photoelectrons are not observed in any number, no matter how intense the light source is. …
Can microwaves be used in the experiment on photoelectric effect?
No. Explanation: The photoelectric effect is totally a Quantum Physics phenomenon.
Why is cadmium used in photoelectric effect rather than lithium?
Potessium and Caesium have much lower Ionisation enthalpy than that of Lithium . Therefore ,these metals on exposure to light emits electrons easily but lithium doesn’t . That’s why K and Cs rather than Li are used in photoelectric cells.
Which is the first material used for photoelectric emission was?
Originally, this was a phototube, a vacuum tube containing a cathode made of a metal with a small work function so that electrons would be easily emitted.