  Medium level questions

## Nuclei

- Want to practice more questions? Here are the Medium level questions
1
The time taken by a particle moving with velocity    in crossing a nucleus will approximately be
A
second
B
second
C
second
D
second
The graph of ) versus of nucleus is :
( is a constant , R is radius and A is the atomic number)
A
a straight line
B
a parabola
C
an ellipse
D
a circle
(i) What characteristic property of nuclear force explains the constancy of binding energy per nucleon in the range of mass number lying ?
(ii) Show that the density of nucleus over a wide range of nuclei is constant-independent of mass number .
Calculate the binding energy per nucleon for Beryllium , its mass being . The masses of proton and neutron are and . (Take )
A
8.3636  MeV
B
7.2828 MeV
C
9.4444 MeV
D
6.7275 MeV
Consider the nuclear fission,
Given that the binding energy/nucleon of , and are, respectively, 8.03 MeV, 7.07 MeV and 7.86 MeV, identify the correct statement:
A
8.3 MeV energy will be released
B
energy of 12.4 MeV will be supplied
C
energy of 3.6 MeV has to be supplied
D
none of the above
A nucleus with mass number initially at rest emits an -particle. lf the value of the reaction is , calculate the kinetic energy of the -particle.
A
B
C
D
Find the energy released when two nuclei fuse together to form a single nucleus. Given, the binding energy per nucleon of and are MeV and MeV respectively.
% of a radioactive element disintegrates in .The percentage of the radioactive element disintegrated in will be
A
%
B
%
C
%
D
%
In a Uranium ore the ratio of nuclei to nuclei is . Evaluate the age of the ores, assuming all the lead to be a final decay product of the uranium series. The half life of nuclei is years.