Which of the following statements is incorrect about the photons
Correct answer: C. Photon exert no pressure
- A. Momentum of photon is given by h/λ
- B. Rest mass of photon is zero
- C. Photon exert no pressure
- D. Energy of photon is hν
Explanation
The correct answer is that photons exert no pressure, which is incorrect. In reality, photons can exert pressure due to their momentum when they collide with surfaces, a principle utilized in technologies like solar sails. The other options present statements that are true: the momentum of a photon is indeed defined correctly as p = h/λ, the rest mass of a photon is zero, and the energy of a photon is accurately described by the equation E = hν.
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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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