Practice - Reflection of Sound (Echo)
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Practice Questions
Test your understanding with targeted questions
What is an echo?
💡 Hint: Think about sounds that bounce off walls.
What is the minimum distance required for hearing an echo?
💡 Hint: Consider how far a sound must travel before it bounces.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the minimum distance for an echo to be heard?
💡 Hint: Remember the required distance discussed.
True or False: An echo can be heard if the reflecting surface is less than 17.2 meters away.
💡 Hint: Reflect on the distance condition necessary for echoes.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You are in a large hall and clap your hands. If the first clap is heard followed by the echo 0.5 seconds later, what is the approximate distance to the wall if the speed of sound in air is 343 m/s?
💡 Hint: Consider the travel time of the sound to and from the wall.
If a sound takes 0.2 seconds to return as an echo, calculate the distance to the reflecting surface in a medium where sound travels at 440 m/s.
💡 Hint: Remember to divide the total time by two to find the one-way distance.
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