I think it would be that they have long wavelengths
C i’m pretty sure but don’t take me as your first answer i just need to answer a question to ask one.
Answer:
7.8 mm
Explanation:
Wavelength = λ = 710 nm = 710×10⁻⁹ m
Distance between light sources = L = 9 m
Diameter of pinhole = d = 1 mm = 1×10⁻³ m
Rayleigh Criterion

Distance between difraction pattern is 7.8 mm.
Answer:
6j
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