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Standard VII
Biology
Pulse
Question

Rubber tube, ear piece and diaphragm are parts of a
  1. Microphone
  2. Periscope
  3. Headphone
  4. Stethoscope

A
Headphone
B
Microphone
C
Stethoscope
D
Periscope
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Solution
Verified by Toppr

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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