What is approximately the energy of a photon of red light, the wavelength of which is 7 * 10 ^ -7m?
| January 25, 2021 | education
What is approximately the energy of a photon of red light, the wavelength of which is 7 * 10 ^ -7m? The constant bar is 6.63 * 10 ^ -34 J * s.
Task data: λ (wavelength of a given photon of red light) = 7 * 10-7 m.
Reference values: C (speed of light) = 299 792 458 m / s; h (Planck’s constant) = 6.63 * 10-34 J * s.
The approximate energy of a given photon is calculated by the formula: Eph = h * C / λ.
Let us perform the calculation: Eph = 6.63 * 10-34 * 299 792 458 / (7 * 10-7) = 0.284 * 10-18 J = 0.284 aJ.
Answer: A given photon of red light has an energy of 0.284 aJ.
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