124.A nucleus of mass 220amu in free state decays to emit an alpha particle. Kinetic energy of the alpha emitted is 5.4MeV. The recoil energy of daughter nucleus is

Q. A nucleus of mass 218 amu in free state decays to emit an $\alpha$ particle. Kinetic energy of the $\alpha$ particle emitted is 6.7 MeV. The recoil energy (in MeV) of the daughter nucleus is:

Q. A stationary $P{b}^{200}$ nucleus emits an $\alpha -$particle with certain kinetic energy $K_{\alpha }$. If recoil velocity of daughter nucleus is $3.39\times 105m/s$ and $f$ is the fraction of the total energy liberated in this decay which is accounted for the recoil energy of the daughter nuclei, then

Q. A stationary Thorium nucleus $(A=220,Z=90)$ emits an alpha particle with kinetic energy $E_{\alpha }$. What is the kinetic energy of the recoiling nucleus?

Q. A stationary $P{b}^{200}$ nucleus emits an $\alpha -$particle with a $K.E.$, $K=5.77MeV$. Find the recoil velocity of daughter nucleus. What fraction of the total energy liberated in this decay is accounted for by the daughter nucleus?

Q. An $\alpha$ particle is emitted from a heavy radioactive nucleus. Compare the kinetic energies of the $\alpha$ particle ${KE}_{\alpha }$ and the daughter nucleus ${KE}_D$.