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Young's slits: λ = 600 nm, D = 1.0 m, d = 0.50 mm. Fringe width?
A0.60 mm
B1.2 mm
C2.4 mm
D0.30 mm
Answer & Solution
Correct answer: B. 1.2 mm
Fringe width is λD/d, which is 600×10⁻⁹ × 1.0 / 0.50×10⁻³ = 1.2 mm.
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