 The diagram above is the schematic of an X-ray tube. The component labelled **Target** is responsible for
Aemitting electrons by thermionic emission
Bstopping the fast electrons and producing X-rays
Cfiltering out long-wavelength X-rays
Daccelerating the electrons across the tube
Answer & Solution
Correct answer: B. stopping the fast electrons and producing X-rays
The cathode (heated filament) emits electrons thermionically. The applied voltage accelerates them across the tube. When they strike the metal target with high kinetic energy, sudden deceleration produces the continuous bremsstrahlung X-ray spectrum, while inner-shell collisions produce the characteristic $K_\alpha, K_\beta$ peaks.
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