99 Percentile Qs Bank for JEE MainPhysicsWaves and Sound
Two speakers connected to the same source of fixed frequency are placed 2   m apart in a box. A sensitive microphone placed at a distance of 4   m from the mid-point along the perpendicular bisector shows maximum response. The box is slowly rotated till the speakers are in line with the microphone. The distance between the mid-point of the speakers and the microphone remains unchanged. Exactly 5 maximum res
Options
- A0 . 8   m
- B0 . 5   m
- C0 . 2   m
- D1 . 6   m
Correct answer
B. 0 . 5   m
Step-by-step solution
In the starting Δ x = 0 and maximum intensity is observed. Next maxima will correspond to Δ x = λ , last, i.e., 5 th maxima will correspond to Δ x = 4 λ , but Δ x = S 1 S 2 = 2   m ∴   4 λ = 2 or λ = 0 . 5   m