Rubber tube, ear piece and diaphragm are parts of a

Headphone

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Microphone

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Periscope

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Stethoscope

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Solution

The correct option is D Stethoscope
The stethoscope is an acoustic (hearing) medical device used for auscultation(listening of internal sounds of the body. The doctor will place a small metal circle called a bell (hallow disc) or diaphragm (plastic disc), against the chest, at the spot where a person can feel the heartbeat. The stethoscope is composed of rubber tube, earpiece and diaphragm.
So, the correct answer is 'Stethoscope'.

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