Calculate the frequency of photons associated with 500 nm wavelength.
Correct answer: B. 6 x 10^14 Hz
- A. 5 x 10^14 Hz
- B. 6 x 10^14 Hz
- C. 7 x 10^14 Hz
- D. 9 x 10^14 H
Explanation
The relation between frequency and wavelength is given by v = fλ. Given that, Speed of light = v = 3 x 108 m/s.Wavelength λ = 500 nm.Frequency f = v/λ.= 3×108/ 500×10-9 = "6 × 1014 Hz".
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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