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For destructive interference to occur in a thin film, the path difference must b
For destructive interference to occur in a thin film, the path difference must be equal to:
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Practice Questions
1 question
Q1
For destructive interference to occur in a thin film, the path difference must be equal to:
nλ/2 (n is an integer)
nλ (n is an integer)
λ/4
λ/2
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Destructive interference occurs when the path difference is an odd multiple of λ/2 (i.e., (2n+1)λ/2).
Questions & Step-by-step Solutions
1 item
Q
Q: For destructive interference to occur in a thin film, the path difference must be equal to:
Solution:
Destructive interference occurs when the path difference is an odd multiple of λ/2 (i.e., (2n+1)λ/2).
Steps: 5
Show Steps
Step 1: Understand what destructive interference means. It happens when two waves meet and cancel each other out.
Step 2: Know that for this cancellation to happen, the waves must be out of phase by a specific amount.
Step 3: The path difference is the difference in distance traveled by the two waves before they meet.
Step 4: For destructive interference, this path difference must be equal to an odd multiple of half the wavelength (λ/2).
Step 5: This can be expressed mathematically as (2n+1)λ/2, where n is any whole number (0, 1, 2, ...).
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