If the wavelength of light is halved, what happens to the frequency of the light

Practice Questions

Q1
If the wavelength of light is halved, what happens to the frequency of the light?
  1. It doubles
  2. It halves
  3. It remains the same
  4. It quadruples

Questions & Step-by-Step Solutions

If the wavelength of light is halved, what happens to the frequency of the light?
  • Step 1: Understand that wavelength (λ) is the distance between two peaks of a wave.
  • Step 2: Know that frequency (f) is how many waves pass a point in one second.
  • Step 3: Remember the relationship: frequency (f) is inversely proportional to wavelength (λ). This means if one goes up, the other goes down.
  • Step 4: If the wavelength (λ) is halved, it means it becomes shorter.
  • Step 5: Since frequency (f) and wavelength (λ) are inversely related, if the wavelength is halved, the frequency must increase.
  • Step 6: Specifically, if the wavelength is halved, the frequency doubles.
  • Wave-Particle Duality – Understanding the relationship between wavelength and frequency in electromagnetic waves.
  • Inverse Proportionality – Recognizing that frequency increases as wavelength decreases, following the formula f = c/λ.
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