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Photoelectric Effect Video Lecture | Physics for JEE Main & Advanced

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FAQs on Photoelectric Effect Video Lecture - Physics for JEE Main & Advanced

1. What is the photoelectric effect?
Ans. The photoelectric effect is the phenomenon where electrons are emitted from a material when it is exposed to light or electromagnetic radiation of sufficient frequency.
2. What is the equation that describes the photoelectric effect?
Ans. The equation that describes the photoelectric effect is E = hf - φ, where E is the energy of the emitted electron, hf is the energy of the incident photon, and φ is the work function of the material.
3. How does the intensity of light affect the photoelectric effect?
Ans. The intensity of light does not affect the photoelectric effect. Instead, the frequency of the incident light is what determines whether electrons will be emitted from the material.
4. What is the significance of the threshold frequency in the photoelectric effect?
Ans. The threshold frequency is the minimum frequency of light required to eject electrons from a material in the photoelectric effect. If the frequency of the incident light is below the threshold frequency, no electrons will be emitted.
5. How does the photoelectric effect support the particle theory of light?
Ans. The photoelectric effect supports the particle theory of light as it demonstrates that light behaves as discrete packets of energy called photons, which interact with electrons in a material to eject them.
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