How to calculate lambda?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Lambda (λ) represents wavelength and is calculated using λ = v/f for mechanical waves or λ = c/f for electromagnetic waves. Alternative formulas include λ = hc/E (from energy, where h = 6.626 × 10⁻³⁴ J·s) and λ = h/p (de Broglie wavelength, where p is momentum). Choose the appropriate formula based on available information. Always ensure units are compatible: velocity in m/s, frequency in Hz, energy in Joules, and the result will be wavelength in meters.
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