Photoelectric effect

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    Created by @hafsa_naeem

    What is the photoelectric effect?

    Electrons are emitted from a metal surface when exposed to high-frequency electromagnetic radiation.

    What are photoelectrons?

    Electrons emitted from a metal surface due to the photoelectric effect.

    What is threshold frequency (fo)?

    Minimum frequency of light required to eject electrons from a metal surface.

    How does light intensity affect photoelectric current?

    Higher intensity increases the number of emitted electrons, but not their kinetic energy.

    What happens if the frequency of light is less than threshold frequency?

    No electrons are emitted from the metal surface.

    What is stopping potential?

    Minimum negative voltage that stops all photoelectrons from reaching the detector.

    How does the photoelectric effect support the particle nature of light?

    It shows that light must have sufficient energy to eject electrons, indicating quantization.

    What is the work function (Φ)?

    Minimum energy required to eject an electron from a metal surface.

    How does frequency of incident light affect the kinetic energy of photoelectrons?

    Higher frequency increases the maximum kinetic energy of emitted electrons.

    What did Einstein contribute to the understanding of the photoelectric effect?

    He explained it using photon energy and the concept of quantized light.