01 Which statement about ultrasound is incorrect?

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02 What is the speed of sound in air at 0°C?

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03 What is the intensity level of a very faint audible sound?

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04 At 25°C: A. Sound speed in oxygen is 316 m/min. B. Sound…

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05 Which is used to detect cracks and flaws in metal blocks?

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06 A sound source produces frequency 600 Hz and wavelength 3 m. What…

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07 What is the frequency range of ultrasonic waves?

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08 The speed of sound increases as we increase _____.

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09 An object moves at four times the speed of sound. What is…

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10 Calculate the wavelength of sound with frequency 200 Hz and speed 400…

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