Atoms and Nucle...

The binding energy per nucleon of O¹⁶ 7.97 MeV and that of O¹⁷ is 7.75 MeV. The energy (in MeV) required to remove a neutron from O¹⁷ is

The rest energy of an electron is 0.511 MeV. The electron is accelerated from rest to a velocity 0.5 c. The change in its energy will be

A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8 : 1. The ratio of radii of the fragments is

For uranium nucleus how does its mass very with volume

The rest mass of an electron as well as that of positron is 0.51 MeV. When an electron and positron are annihilate, they produce gamma-rays of wavelength (s)

A nucleus with mass number 220 initially at rest emits an α–particle. If the Q value of the reaction is 5.5 MeV, calculate the kinetic energy of the α–particle

The half life of radioactive Radon is 3.8 days. The time at the end of which 1/20^th of the Radon sample will remain undecayed is (Given log₁₀ e = 0.4343)

If 10% of a radioactive material decays in 5 days, then the amount of original material left after 20 days is approximately

A radioactive sample S1 having an activity of 5μCi has twice the number of nuclei as another sample S2 which has an activity of 10μCi. The half lives of S1 and S2 can be

The half life period of a radioactive element X is same as the mean life time of another radioactive element Y. Initially both of them have the same number of atoms. Then