What is the energy of a photon with a frequency of 5 x 10^14 Hz? (h = 6.63 x 10^

Practice Questions

Q1
What is the energy of a photon with a frequency of 5 x 10^14 Hz? (h = 6.63 x 10^-34 J.s)
  1. 3.31 x 10^-19 J
  2. 1.32 x 10^-19 J
  3. 2.65 x 10^-19 J
  4. 4.98 x 10^-19 J

Questions & Step-by-Step Solutions

What is the energy of a photon with a frequency of 5 x 10^14 Hz? (h = 6.63 x 10^-34 J.s)
  • Step 1: Identify the formula for the energy of a photon, which is E = hν, where E is energy, h is Planck's constant, and ν is frequency.
  • Step 2: Write down the values given in the question: h = 6.63 x 10^-34 J.s and ν = 5 x 10^14 Hz.
  • Step 3: Substitute the values into the formula: E = (6.63 x 10^-34 J.s) * (5 x 10^14 Hz).
  • Step 4: Perform the multiplication: 6.63 * 5 = 33.15 and combine the powers of 10: 10^-34 * 10^14 = 10^-20.
  • Step 5: Combine the results: E = 33.15 x 10^-20 J.
  • Step 6: Convert 33.15 x 10^-20 J to scientific notation: E = 3.315 x 10^-19 J.
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