PhysicsSound wavesJAMB
An echo is heard 2 s after a sound is made in front of a cliff. If the speed of sound is 340 m/s, the cliff is:
Show answer
Answer: B. 340 m away
The sound travels to the cliff and back: 2d = 340 × 2 → d = 340 m.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.