Production and Propagation of Sound MCQs
Practice Production and Propagation of Sound multiple-choice questions from Sound (Class 9 Science) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
Production and Propagation of SoundQuiz - Solve & Score
Q1. A factory siren sounds at the start of a shift. If the air carries sound at 340 m/s, how long does the noise take to reach a worker standing 1700 m away?
- A.2.5 s
- B.6 s
- C.5 s
- D.578000 s
Answer: C. 5 s
time = distance / speed = 1700 / 340 = 5 s.
Q2. A loudspeaker at a stadium plays an announcement. Travelling at 343 m/s through the air, how many seconds later does the sound arrive at a fan seated 6860 m from the speaker?
- A.20 s
- B.10 s
- C.2352980 s
- D.21 s
Answer: A. 20 s
time = distance / speed = 6860 / 343 = 20 s.
Q3. Fireworks burst high above a town. With sound moving at 330 m/s, what time elapses before a child 9900 m away hears the bang?
- A.3267000 s
- B.31 s
- C.15 s
- D.30 s
Answer: D. 30 s
time = distance / speed = 9900 / 330 = 30 s.
Master Production and Propagation of Sound on RankByte
Step-by-step solutions, mock tests, live ranks and streaks - free to start.
Get early access