Which of the following equations represents the condition for the first minimum

Practice Questions

Q1
Which of the following equations represents the condition for the first minimum in a single-slit diffraction pattern?
  1. a sin(θ) = λ
  2. a sin(θ) = 2λ
  3. a sin(θ) = 3λ
  4. a sin(θ) = 0

Questions & Step-by-Step Solutions

Which of the following equations represents the condition for the first minimum in a single-slit diffraction pattern?
  • Step 1: Understand that we are looking for the first minimum in a single-slit diffraction pattern.
  • Step 2: Know that 'a' represents the width of the slit.
  • Step 3: Know that 'λ' (lambda) represents the wavelength of the light being used.
  • Step 4: The angle 'θ' is the angle at which we observe the diffraction pattern.
  • Step 5: The condition for the first minimum occurs when the path difference between light from the edges of the slit is equal to one wavelength.
  • Step 6: This condition is mathematically expressed as a sin(θ) = λ.
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