The mean lives of a radioactive subs†an ces are 40h and 60h for a α-emission and β- emission respectively. The decay cons†an t of the radioactive subs†an ce if it is decaying α and β simul†an eously is nearly (1)0.04h^{-1} (2)0.03h^{-1} (3)0.01h^{-1} (4)0.02h^{-1

The mean lives of a radioactive subs†an ces are 40h and 60h for a α

1.	The mean lives of a radioactive subs†an ces are 40h and 60h for a α-emission and β- emission respectively. The decay cons†an t of the radioactive subs†an ce if it is decaying α and β simul†an eously is nearly (1)0.04h^{-1} (2)0.03h^{-1} (3)0.01h^{-1} (4)0.02h^{-1
Answer» The mean lives of a radioactive subs†an ces are 40h and 60h for a α-emission and β- emission respectively. The decay cons†an t of the radioactive subs†an ce if it is decaying α and β simul†an eously is nearly (1)0.04h^{-1} (2)0.03h^{-1} (3)0.01h^{-1} (4)0.02h^{-1