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  • A nucleus with mass number 220 initially at rest emits an -particle. If the Q-value of the reaction is <img a

A nucleus with mass number 220 initially at rest emits an \alpha-particle. If the Q-value of the reaction is 5.5 \mathrm{cV}, calculate the kinetic energy of \alpha-particle -
 

Option: 1

4.4 \mathrm{MeV}


Option: 2

5.4 \mathrm{MeV}


Option: 3

5.6 \mathrm{MeV}


Option: 4

6.5 \mathrm{MeV}


Answers (1)

best_answer

 

\begin{aligned} \mathrm{k_1+k_2 }& =5.5 \mathrm{eV}-10 \quad \quad \dots(1) \\ \text { \& } \quad \mathrm{P_1=P_2} & =\mathrm{\sqrt{2 \times 216 k_1}=\sqrt{2 \times 4 k_2} \quad \quad \dots \text { (2) }} \end{aligned}

Solving equation (1) & (2) we get,

\mathrm{ k_2=5.4 \mathrm{cV} }

Posted by

Ritika Kankaria

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