Embibe Experts Solutions for Chapter: Nuclear Physics, Exercise 1: Exercise 1

A nucleus of mass $220$ amu in free state decays to emit an $\alpha$-particle. Kinetic energy of the $\alpha$-particle emitted is $5.4\mathrm{MeV}.$ The recoil energy of the daughter nucleus is

The radius of ${}_{32}\mathrm{X}$ nuclide is measured to be twice the radius of ${}_4{}^{9}Be.$ The number of neutrons in $X$ is

Heavy water is

The atoms of same element having same chemical properties but different masses are called

An element $A$ decays by a two step process into element $C$
$A\to B+{{}_{2}He}^4$
$B\to C+2e^{-}$
Then,

The half-life of${}_{92}^{238}\mathrm{U}$ undergoing $\alpha -$ decay is $4.5\times {10}^9$ $\mathrm{years}$. Calculate the activity of $1 \mathrm{g}$ sample of${}_{92}^{238}\mathrm{U}$. (Avogadro's number is $6.022\times {10}^{23}$)

The average kinetic energy of the thermal neutron is of the order of

The control rod in a nuclear reactor is made of