Constructive Interference: Path Difference

00:00 1 marks

Two coherent point sources S1 and S2 emit waves of wavelength $\lambda$. The waves interfere constructively at point P. What is a possible path difference (S2P – S1P)?

A

$\lambda/2$
B

$\lambda$
C

$3\lambda/2$
D

$\lambda/4$

Hint Hint

Hint

Recall that constructive interference occurs when the path difference equals an integer multiple of $\lambda$, with the smallest non-zero case being $\lambda$.

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Explanation Explanation
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Answer Answer

Complete Answer

$\lambda$

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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