What is the wavelength if the corresponding quantum carries an energy of 10 ^ -17 J.
| January 13, 2021 | education
These tasks: E (the energy that this quantum carries) = 1 * 10 ^ -17 J.
Reference values: h (Planck’s constant) = 6.626 * 10 ^ -34 J * s; C (speed of propagation of light) ≈ 3 * 10 ^ 8 m / s.
The desired wavelength can be expressed from the following formula: E = h * C / λ, whence λ = h * C / E.
Let’s perform the calculation: λ = 6.626 * 10 ^ -34 * 3 * 10 ^ 8 / (1 * 10 ^ -17) = 19.878 * 10 ^ -9 m (19.878 nm).
Answer: The desired wavelength is 19.878 nm.
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