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Verified by Toppr. Photoelectric effect depends on the frequency (or wavelength) of the light not intensity of the light. So, the light which has less wavelength less than threshold will lead to emission of photoelectrons and the one above that will not.
In a photoelectric effect experiment, the threshold wavelength of incident light is 260 nm and E (in eV) = 1237/λ (nm). Find the maximum kinetic energy of emitted electrons.
If λ0 is the threshold wavelength for photoelectric emission, λ the wavelength of light falling on the surface of a metal and m is the mass of the electron, then the velocity of ejected electron is given by:
The threshold wavelength, related to threshold frequency by the wave equation, is defined as: The longest wavelength of incident electromagnetic radiation that would remove a photoelectron from the surface of a metal. Threshold frequency and wavelength are properties of a material, and vary from metal to metal.
Sep 12, 2022 · Describe how Einstein’s idea of a particle of radiation explains the photoelectric effect. When a metal surface is exposed to a monochromatic electromagnetic wave of sufficiently short wavelength (or equivalently, above a threshold frequency), the incident radiation is absorbed and the exposed surface emits electrons.
Learn about the photoelectric effect, its experimental evidence, and its quantum explanation in this chapter of University Physics Volume 3 by OpenStax.
This process is called the photoelectric effect (or photoelectric emission or photoemission ), a material that can exhibit this phenomenon is said to be photoemissive, and the ejected electrons are called photoelectrons; but there is nothing that would distinguish them from other electrons.
When light strikes certain materials, it can eject electrons from them. This is called the photoelectric effect, meaning that light (photo) produces ele...
The scientists observed that if the incident light had a frequency less than a minimum frequency ν 0 , then no electrons were ejected regardless of the light amplitude. This minimum frequency is also called the threshold frequency, and the value of ν 0 depends on the metal.
Feb 20, 2022 · You can show for yourself that the threshold wavelength is 459 nm (blue light). This means that if calcium metal is used in a light meter, the meter will be insensitive to wavelengths longer than those of blue light.
