X-rays originate at the:
A) cathode.
B) port.
C) focusing cup.
D) focal spot.

Question

Quizplus · Accepted Answer

X-rays originate at the focal spot, which is where the high-speed electrons from the cathode collide with the anode target material and emit X-rays. The cathode produces a beam of electrons that are focused onto the anode (focusing cup helps with this), where X-rays are generated at the focal spot. The port is simply the opening through which the X-rays pass out of the X-ray machine.

X-Rays Originate at The