What is the energy of a photon with a frequency of 5 x 10^14 Hz? (Planck's const

Practice Questions

Q1
What is the energy of a photon with a frequency of 5 x 10^14 Hz? (Planck's constant h = 6.626 x 10^-34 J·s) (2021)
  1. 3.31 x 10^-19 J
  2. 1.32 x 10^-19 J
  3. 2.48 x 10^-19 J
  4. 4.97 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? (Planck's constant h = 6.626 x 10^-34 J·s) (2021)
  • Step 1: Identify the formula to calculate the energy of a photon, which is E = h * frequency.
  • Step 2: Write down the value of Planck's constant (h), which is 6.626 x 10^-34 J·s.
  • Step 3: Write down the frequency of the photon, which is 5 x 10^14 Hz.
  • Step 4: Substitute the values into the formula: E = (6.626 x 10^-34 J·s) * (5 x 10^14 Hz).
  • Step 5: Perform the multiplication: 6.626 x 5 = 33.13 and combine the powers of 10: 10^-34 * 10^14 = 10^-20.
  • Step 6: Combine the results: E = 33.13 x 10^-20 J, which can be simplified to 3.31 x 10^-19 J.
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