Question Detail
Question
For light with a wavelength (λ) of 632 nm, what is the minimum path difference required to cause destructive interference?
Correct Answer
Option B is the correct answer.
Detailed Explanation
On page 3, for destructive interference, the path difference is given as 'λ/2, 3λ/2, 5λ/2, ...'. The minimum path difference is λ/2. Given λ = 632 nm, the minimum path difference is 632 nm / 2 = 316 nm.
Hint
Look for the first term in the series of path differences for destructive interference.