Home Physics Electron, Photon, Photoelectric Effect and X-rays X - Rays What determines the hardness of the X-rays o…
Physics Electron, Photon, Photoelectric Effect and X-rays X - Rays MCQ (Single Correct)

What determines the hardness of the X-rays obtained from the Coolidge tube

A
Current in the filament
B
Pressure of air in the tube
C
Nature of target
D
Potential difference between cathode and target

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The correct answer is:
D

Hard X-rays are of higher energy and the energy of X-rays depends on the potential difference between the cathode and the target.

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