Q.
The energy of a photon of characteristic X-rays from a Coolidge tube comes from
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a
The kinetic energy of the striking electron
b
The kinetic energy of the free electrons of the target
c
The kinetic energy of the ions of the target
d
An electronic transition of the target atom
answer is D.
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Detailed Solution
The energy of X-ray photon obtained from a Coolidge tube by an electronic transition of target atom such as Kα line is obtained from transition from L orbit in K orbit.
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