Question

Two point sources in a ripple tank radiate waves in phase with a constant wavelength of 0.02 meter. The first-order interference maximum appears at 6° (use sin 6° = 0.1). The separation of the sources is most nearly

(A) 0.001 m 

(B) 0.002 m 

(C) 0.06 m 

(D) 0.1 m 

(E) 0.2 m

Answer 1

The correct option is: (E) 0.2 m

Explanation:

Using mλ = d sin θ … (1)(0.02) = d (0.1)