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At which of the following depths is the beam most likely to have the same diameter as it has at a depth of 11 cm? Fig 9.4 crystal diameter(7).png

What are the two methods used for focusing a mechanical transducer?  (multiple answers)

Which transducer has the lower numerical value of axial resolution?

Transducer frequency and near zone length are inversely related.

If there are more cycles in a pulse, the numerical value of  range resolution is_________.

The frequency of a transducer does not change. If the diameter of the new piezoelectric crystal increases, what happens to the near zone length?

The formation of a beam from an aperture is explained by ____. (READ the question carefully)

What can you tell about the image below? Focused Transducer (2).png   

A pair of 6 MHz probes are identical except for the active element diameters, which are 7 mm and 12 mm.  Which beam will be more compact in the far field?

At which of the following depths is the beam widening? Fig 9.4 crystal diameter(8).png