A) kinetic energy of incident electrons
B) intensity of incident electrons
C) both (a) and (b)
D) neither (a) nor (b)
Correct Answer: A
Solution :
Coolidge tube is used for the production of X-rays when an alternating potential difference of about 20000 V is applied between the filament F and target T. Then, electrons emitting from the filament strike the tangent with a very high speed and X-rays are emitted. The wavelength of X-rays depends upon the kinetic energy of electrons producing them and this kinetic energy depends upon the potential difference between filament F and target T. As the potential difference is increased the wavelength of X-rays produced decreases and their penetrating power increases.
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