A frequency ultrasound is used to image details of abut 1 mm. If this was the sm

Question

A frequency ultrasound is used to image details of abut 1 mm. If this was the smallest detectable wavelength and this sound travelled at a speed of 1500 m/sec, what is the minimum frequency of this sound wave? Write the frequency in MHz.
A frequency ultrasound is used to image details of abut 1 mm. If this was the smallest detectable wavelength and this sound travelled at a speed of 1500 m/sec, what is the minimum frequency of this sound wave? Write the frequency in MHz.
A frequency ultrasound is used to image details of abut 1 mm. If this was the smallest detectable wavelength and this sound travelled at a speed of 1500 m/sec, what is the minimum frequency of this sound wave? Write the frequency in MHz.

Explanation / Answer

We know that, frequency = speed / wavelength

In case of ultrasound, the smallest image details is the wavelength of the ultrasound which is 1mm in our case

So the minimum frequency of this wave is 1500 / 10-3 = 1.5 * 106 Hz = 1.5 MHz

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