Question

Give three uses of multiple reflection of sound.

Answer 1

Answer:-

★Reflection of sound is based on the two laws and they are:

• Reflection of sound is based on the two laws and they are:The incidence angle is always equal to the reflection angle.

• The incident sound wave, the normal, and the reflected wave, all rest in a common plane.

• Following are the practical applications of reflection of sound waves are:

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

• 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 reflections of sound.

• The working of hearing aid is based on the reflection of sound. In hearing aid the sound waves are reflected into a slimmer area so as to direct the sound to the ear.

• The soundboard is based on the reflection of sound. Here, the sound waves are uniformly reflected can be seen in the auditorium. This helps in improving quality.

Answer 2

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Three uses of multiple reflection of sound are :)

1) HEARING AID

2) STETHOSCOPE

3) SONAR etc.

THANKS

====== DR. RAVI =======