In Ultrasound with a single transducer probe: The greater concave curvature of the transducer the longer the focal length.
The focal length being the distance from the transducer to the region of strongest focus. Greater curvature results in a shorter focal length. You can imagine that the edges of a steeply curved transducer point to a focus that is close to the probe whereas the edges of a mildly concave transducer point to a focus further in the distance.
False