Identify the correct order of frequencies.
Correct answer: C. V3 > v2 > v1
- A. V1 > v2 > v3
- B. V2 > v3 > v1
- C. V3 > v2 > v1
- D. V1 > v3 > v2
Explanation
As the frequency of the incident radiation increases, the potential required to stop the ejected electron , (Stopping Potential) increases. Hence, v3 > v2 > v1. The stopping potential varies linearly with the frequency of the incident radiation.
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Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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