Physics · Waves and Sound
To hear a distinct echo, what is the minimum time interval required between the original sound and the reflected sound?
- 10.2 seconds
- 20.1 second✓
- 30.4 seconds
- 40.01 second
Correct answer
0.1 second
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Physics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Waves and Sound?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Physics · Waves and Sound