Physics
With respect to ultrasonic waves, which of the following statements is incorrect ?
- they travel undeviated through a long distance
- they have a speed greater than the speed of sound in a medium
- they are not easily absorbed in a medium
- they can be confined to a narrow beam
Sound
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Answer
they have a speed greater than the speed of sound in a medium
Reason — Three properties of ultrasonic waves are:
- they travel undeviated through a long distance
- they are not easily absorbed in a medium
- they can be confined to a narrow beam
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