The Speaker and Two Microphones Shown in the Figure Are

Multiple Choice

The speaker and two microphones shown in the figure are arranged inside a sealed container filled with neon gas. The wires from the microphones are connected to an oscilloscope (not shown) . The signal from the microphones is monitored beginning at time t = 0 s when a sound pulse is emitted from the speaker. The pulse is picked up by microphone 1 at t₁ = 1.150 × 10^-2 s and by microphone 2 at t₂ = 1.610 × 10^-2 s. What is the speed of sound in neon gas?

A) 124 m/s
B) 174 m/s
C) 362 m/s
D) 435 m/s
E) 724 m/s