Einstein's photoelectric equation is
Correct answer: D. Option D
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
From the incident photon energy, the electron needs a certain minimum energy called the work function "Φ" to escape from the metal surface and the rest appears as the kinetic energy of the electron. That is, hf - Φ = 1/2 mv2 max This is known as Einstein's photoelectric equation.
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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