What is the frequency of a photon whose energy is 66.3 eV?
Correct answer: C. 1.6 x 10^16 Hz
- A. 12.6 x 10^6 Hz
- B. 19.6 x 10^6 Hz
- C. 1.6 x 10^16 Hz
- D. 81.6 x 10^6 Hz
Explanation
The explanation is given below:Frequency can be written as f = E/h f = (66.3x1.6 x 10^-19) / (6.63x10^-34) f = 1.6 x 10^16 Hz
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Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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