The principle that is used to generate ultrasounds in ultrasonography is

Nuclear magnetic resonance

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Used short half life radio isotopes

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Piezoelectric effect

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Doppler effect

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Solution

The correct option is C Piezoelectric effect
The ultrasound generated uses the principle of piezoelectricity that states that if a piezoelectric crystal is applied with electricity then it will vibrate at certain frequency producing ultrasounds.
So the correct answer is "Piezoelectric effect".

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Similar questions

A d.c generator is based on the principle of :

(a) electrochemical induction (b) electromagnetic induction

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