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Monochromatic light of wavelength $\lambda$ is incident normally on two slits, $S_1$ and $S_2$, producing an interference pattern on a screen as shown - Edexcel - A-Level Physics - Question 6 - 2023 - Paper 2
Question 6
6
Monochromatic light of wavelength $\lambda$ is incident normally on two slits, $S_1$ and $S_2$, producing an interference pattern on a screen as shown. V, W, X, ... show full transcript
Worked Solution & Example Answer:6
Monochromatic light of wavelength $\lambda$ is incident normally on two slits, $S_1$ and $S_2$, producing an interference pattern on a screen as shown - Edexcel - A-Level Physics - Question 6 - 2023 - Paper 2
Step 1
A. $S_{2Z} - S_{X}$
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Answer
This expression represents the distance between slits S2 to point Z and point X. The difference will not necessarily equal to 2λ.
Step 2
B. $S_{1X} - S_{1V}$
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Answer
This expression is the distance from S1 to X and from S1 to V. Since V represents a minimum adjacent to X which is a maximum, this distance is equal to λ, making the expression equal to 2λ.
Step 3
C. $S_{1W} - S_{1Y}$
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Answer
This expression represents the distance between maxima W and Y, which is also equal to λ. Therefore, this expression does not equal to 2λ.
Step 4
D. $S_{1W} - S_{2Y}$
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Answer
This expression involves distances from both slits to maxima points. However, it does not represent a simple relationship that equals 2λ.
