Which of the following is called secondary emission?
A
Positron emission
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B
K-electron capture
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C
γ-emission
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D
α-emission
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Solution
The correct option is Cγ-emission γ-emission is called secondary emission. γ-emissions are followed by emission of either α or β
Gamma rays are very high frequency electromagnetic waves usually emitted from radioactive decay. Natural sources of gamma rays include gamma decay from naturally occurring radioisotopes such as potassium-40, and also as a secondary radiation from atmospheric interactions with cosmic ray particles.