Test Preparation on Atomic and Nuclear Physics-II-Physics Test Series For NEET 2020
1.
The masses of neutron and proton are 1.0087 a.m.u. and
1.0073 a.m.u. respectively. If the neutrons and protons
combine to form a helium nucleus (alpha particles) of mass
4.0015 a.m.u. the binding energy of the helium nucleus will
be (1 a.m.u.= 931 MeV)
2.
3.
The number of beta particles emitted by a radioactive
substance is twice the number of alpha particles emitted by
it. The resulting daughter is an
4.
Order of magnitude of density of uranium nucleus is (m .1 67x10-27kg)
5.
Atomic weight of boron is 10.81 and it has two isotopes
10
5 B and 5 B11 . Then ratio of 5 B10 :5 B11 in nature would
be
