Questions
The walls of the halls built for music concerts should
a
Amplify sound
b
Transmit sound
c
Reflect sound
d
Absorb sound
detailed solution
Correct option is D
The walls of an auditorium should absorb sound to avoid echo.Talk to our academic expert!
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Ultrasonic signal sent from SONAR returns to it after reflection from a rock after a lapse of 1 sec. If the velocity of ultrasound in water is 1600 ms–1, the depth of the rock in water is
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