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The crystal of lead zirconate is a key c...

The crystal of lead zirconate is a key component of

A

Electroencephalography

B

Electroardiography

C

Magnetoencephalography

D

Sonography

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Lead Zirconate**: Lead zirconate, also known as PZT (lead zirconate titanate), is an inorganic compound that exhibits piezoelectric properties. This means it can generate an electrical charge in response to mechanical stress. 2. **Identifying Applications**: The piezoelectric effect of lead zirconate makes it useful in various applications, particularly in devices that convert mechanical energy into electrical energy and vice versa. 3. **Analyzing the Options**: - **Electroencephalography (EEG)**: This technique measures electrical activity in the brain using electrodes placed on the scalp. Lead zirconate is not used in this method. - **Electrocardiography (ECG)**: This method records the electrical activity of the heart. Again, lead zirconate is not a component of this technique. - **Magnetoencephalography (MEG)**: This technique measures the magnetic fields produced by neural activity. Lead zirconate is not involved here either. - **Sonography**: This technique, also known as ultrasound, uses high-frequency sound waves to create images of organs and structures inside the body. Lead zirconate is a key component in ultrasound transducers, which convert electrical signals into sound waves and vice versa. 4. **Conclusion**: Based on the analysis, the correct answer is that the crystal of lead zirconate is a key component of **sonography**. **Final Answer**: Sonography ---

**Step-by-Step Solution:** 1. **Understanding Lead Zirconate**: Lead zirconate, also known as PZT (lead zirconate titanate), is an inorganic compound that exhibits piezoelectric properties. This means it can generate an electrical charge in response to mechanical stress. 2. **Identifying Applications**: The piezoelectric effect of lead zirconate makes it useful in various applications, particularly in devices that convert mechanical energy into electrical energy and vice versa. 3. **Analyzing the Options**: - **Electroencephalography (EEG)**: This technique measures electrical activity in the brain using electrodes placed on the scalp. Lead zirconate is not used in this method. ...
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