What formula is E = hc/λ?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
This is the photon energy formula from quantum physics. It calculates the energy (E) of a photon based on its wavelength (λ), where:
- E = energy in joules
- h = Planck's constant (6.626 × 10⁻³⁴ J·s)
- c = speed of light (3 × 10⁸ m/s)
- λ = wavelength in meters
This relates electromagnetic wave properties to quantum energy levels.
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