Question

Two coherent light sources A and B are at a distance 22 from each other ( A = wavelength). The minimum distance from B on the x-axis at which the interference is destructive is

• A. $\frac{3}{2} λ$<
• B. $\frac{λ}{2}$
• C. $\frac{15λ}{2}$
• D. $2\sqrt2λ$

Answer 1

Answer: (C)

$\frac{15λ}{2}$

Answer 2

The correct option is (C): $\frac{15λ}{2}$