Exam-style question
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What is the energy of a photon with a frequency of 5 x 10^14 Hz?.
- A.3.3 x 10^-19 J
- B.2.5 x 10^-19 J
- C.1.2 x 10^-19 J
- D.4.0 x 10^-19 J
Model answer
What a good answer should say
- 3.3 x 10^-19 J
Explanation
Why this works
Using the equation E = hf, where h is Planck's constant (6.63 x 10^-34 J·s), the energy of the photon can be calculated. This shows how photon energy is directly related to its frequency, illustrating the quantum nature of electromagnetic radiation.
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