Interference fringes of separation $$\(x\)$$ are observed on a screen at a distance of 1.00 m from a double slit that is illuminated by yellow light of wavelength 600 nm . At which distance from the double slit would interference fringes of the same separation $$\(x\)$$ be observed when using blue light of wavelength 400 nm ?
A.
0.33 m
B.
0.67 m
C.
0.75 m
D.
1.50 m
Exam No：9702_s24_qp_12 Year：2024 Question No：28
Answer:
D
Knowledge points:
8.3.1 understand the terms interference and coherence
8.3.2 show an understanding of experiments that demonstrate two-source interference using water ripples, light and microwaves
8.3.3 understand the conditions required if two-source interference fringes are to be observed
8.3.4 recall and solve problems using the equation m = $\frac{ax}{n}$ for double-slit interference using light
Solution:
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