The crystal of lead zirconate is a key component of

The crystal of lead zirconate is a key component of
  1. electroencephalography
  2. electrocardiography
  3. magnetoencephalography
  4. sonography.

Solution

Sonography is a technique to visualise the structures beneath the skin. A transducer is used to recieve soundwave and signals to the skin. The transducer contains the crystals of lead zirconate that convert electric current into sound waves. Transducer also act as a reciever and converts the echoes into electrical signals which are processed and displayed on the screen of a monitor to show 2-D image.

Asked in: NEET 2020 (Phase 2)

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