Multiple choice

What are the properties of ultrasound that makes it useful?

  1. High power and high speed

  2. High frequency and high speed

  3. High frequency and bending around the objects

  4. High power and good directivity
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D Correct answer
Explanation

Ultrasound is useful primarily because it has high power (can penetrate materials effectively) and good directivity (can be focused into narrow beams). High frequency alone doesn't confer utility, and ultrasound doesn't bend around objects - it travels in straight lines due to its short wavelength.

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