You must have seen the doctor checking the sounds produced in the chest of a patient using medical instrument called stethoscope. On what principle does this stethoscope works?

Absorption

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Beats formation

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Multiple reflections

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Single reflection

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Solution

The correct option is C Multiple reflections
In stethoscope, sound is recieved by chest piece and sent it to the earpieces by multiple reflections through a long tube. Doctors diagnose the condition of an organ by hearing the sound using a stethoscope.

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When the chest piece of stethoscope is kept on the chest, some thumping sound is heard. What does this sound implies?

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