Question

Question 12:

Give two practical applications of reflection of sound waves.

Answer 1

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(i) Reflection of sound is used to measure the distance and speed of underwater objects. This method is known as SONAR.

(ii) Working of a stethoscope is also based on reflection of sound. In a stethoscope, the sound of the patient’s heartbeat reaches the doctor’s ear by multiple reflection of sound.

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Answer 2

Answer:

The example that we observed in our daily lives are:-

1. In the cinemas

2. In auditorium

3. In empty room

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