The photo electrons ejected from a surface require a stopping voltage of 5.0 V. If the intensit

step 1 In this question, you are given that the stopping voltage or the stopping potential is 5 .0 volt

The photo electrons ejected from a surface require a...

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Key Concepts

Photon Energy and Light Intensity

Photon energy is given by the equation E = hf, where h is Planck's constant and f is the frequency of the light. Light intensity, however, is related to the number of photons hitting the material per unit area and time. In the context of the photoelectric effect, while an increase in intensity increases the number of electrons ejected, it does not affect the energy of each individual photon, meaning that the stopping voltage remains unchanged if the frequency remains constant.

Photoelectric Effect

The photoelectric effect is the phenomenon in which electrons are emitted from a material's surface when it is exposed to light of a high enough frequency. This effect was crucial in establishing the concept of quantized light, where light behaves as particles called photons, each carrying a discrete energy proportional to its frequency.

Stopping Voltage

Stopping voltage is the minimum reverse potential applied in a photoelectric experiment that is sufficient to prevent the most energetic photoelectrons from reaching the collector. It directly measures the maximum kinetic energy of the ejected electrons, and according to Einstein's photoelectric equation, it depends solely on the energy of the individual photons, not the intensity of the light.

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