Initially no. of atoms of \(B=0\) after \(t=0\), no. of atoms of \({B}\) will starts increasing \(\&\) reaches maximum value when rate of decay of \({B}=\) rate of formation of \(B\).
After that maximum value, no. of atoms will starts decreasing as growth \(\&\) decay both are exponential functions, so best possible graph is \((2)\)
આપેલ ન્યૂક્લિયર પ્રક્રિયામાં, મુક્ત થતી ઊર્જાનું અંદાજિત (સંનિકટ) મૂલ્ય $..........\,MeV$ હશે.
${ }_{92}^{238} A=$ નું દળ $238.05079 \times 931.5\,MeV / c ^2$
${ }_{90}^{234} B =$ નું દળ $234.04363 \times 931.5\,MeV / c ^2$
${ }_2^4 D =$ નું દળ $4.00260 \times 931.5\,MeV / c ^2$ આપેલ છે.