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AMU Medical AMU Solved Paper-1997

  • question_answer
    The missing particle in the radioactive decay is\[_{15}^{30}P\xrightarrow[{}]{{}}\,_{14}^{30}Si+?\]

    A)  electron           

    B)  hydrogen atom

    C)  positron          

    D)  neutron

    Correct Answer: C

    Solution :

    : \[_{15}^{30}P\to _{14}^{30}Si+_{a}^{b}x\] Here, \[30=30+b\Rightarrow b=0\]. \[15=14+a\Rightarrow a=1\]. \[\therefore \]Missing particle is\[_{+1}^{0}e\]. (positron)


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