Q.

Just after a K shell capture, which of the following come out from the atom ?

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a

 Electron

b

x – Ray photon

c

Neutrino

d

Antineutrino

answer is A, C.

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Detailed Solution

Nuclear proton absorbs one k – shell e- and as the result proton changes to neutron and a neutrino is emitted. Out side nucleus one e- jumps to k – shell valency and emits characteristic X – ray.

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