Atomic and Nuclear Physics

Atomic and Nuclear Physics
In nuclear fusion, as compared to the masses of original nuclei, the final nucleus is always
equal
more
less
zero
Author: rikazzz Comment
Atomic and Nuclear Physics
During natural radioactivity the unstable nucleus disintegrates to become more
stable
unstable
excited
unexcited
Author: rikazzz Comment
Atomic and Nuclear Physics
The radiations bend in the opposite direction in the magnetic field are
α and β radiations
α and γ radiations
γ and β radiations
all of above
Author: rikazzz Comment
Atomic and Nuclear Physics
The mass of neutron and proton is
equal
unequal
zero
undetermined
Author: rikazzz Comment
Atomic and Nuclear Physics
The temperature at the center of the sun is
50 million kelvin
20 million kelvin
30 million kelvin
40 million kelvin
Author: rikazzz Comment
Atomic and Nuclear Physics
The radiation that does not change its direction inside the magnetic field is
alpha
beta
gamma
x-ray
Author: rikazzz Comment
Atomic and Nuclear Physics
The half-life of ¹⁵₃N is 6.5 s. A sample of this nuclide of hydrogen is observed for 32.5 s. The fraction of the original radioactive isotope remaining after this time is
1⁄32
1⁄16
1⁄8
1⁄4
Author: rikazzz Comment
Atomic and Nuclear Physics
The radiation which primarily consists of protons, electrons, alpha particles, and large nuclei are called
environmental radiations
background radiations
positive radiations
cosmic radiations
Author: rikazzz Comment
Atomic and Nuclear Physics
The time during which half of the unstable radioactive nuclei disintegrate of the sample of a radioactive element is called the
full life
half life
double life
quarter life
Author: rikazzz Comment
Atomic and Nuclear Physics
The phenomenon in which radiations split matter into ions is called
denaturing
ionization
condensation
atomization
Author: rikazzz Comment

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