Nuclear Physics Interview Preparation Guide
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Nuclear Physics frequently Asked Questions in various Nuclear Physics job Interviews by interviewer. Get preparation of Nuclear Physics job interview

19 Nuclear Physics Questions and Answers:

1 :: What is e= mc2?

this is mass-energy lesion
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2 :: How asteroids are formed?

due to impact of planets, rocks are escape in the space and
became asteroied. in some case the gasieous material and
vepour produced in the supernowa are coegulated in the
space and form asteroied.
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3 :: Why is heavy water used as a moderator?

Heavy water is water highly enriched in the hydrogen
isotope deuterium.we can compare the neutron inatractions
with billiard ball collision, where neutron collids wth
nucleus of other automs & lose energey.If the colliding
nucleus size is small like hydrogen nucleus it will lose
maximum energey.If nucleus is hevy the neutron hits the
nucleus just changes its direction but not that much chnage
in the energy of neutron. So we use heavy water as
moderator to slow down neutrons.
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4 :: Tell me Is it possible that a nucleus has negative mass defect?

If the nucleus has had a mass defect it is likely that the
strong force and the weak force have sustained a major
reduction in equilibrium. This can cause the positive and
negative charges to reverse and change energy levels. Such
a phenomenon has been describe by Einstein in his paper on
the speed of light and time reduction. You can check this
with the use of an electron microscope to determine is the
color spectrum had changed drastically. If so, then you may
have a problem.
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5 :: What does held nucleons together in a nucleus?

Nuclear force. It is the nuclear force which binds the nucleons
together and is responsible for the stability of nucleus.
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6 :: What is the essential difference between an electron and a beta ray?

The electron of nuclear origin is called a beta-particle.There
is otherwise no difference between an electron and a beta-
particle.
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7 :: Cadmium rods are provided in a nuclear reactor. Why?

cadmium rods are provided in nuclear reactors because when
we start nuclear reacter then more energy is requird for
start the reacter , we can not start nuclear reacter with
less energy, the rod is used specially for stopping
contact of newtron particls with the system
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8 :: Name any two elementary particles which have almost infinite life time?

Electron and proton have almost infinite life time.
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9 :: The velocity of a body was noted to be constant during five minutes of its motion. What was acceleration during this interval its?

since velocity of body remains constant during given time
period,so diff.of velocity(constant)with respect to time
will be ZERO.
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10 :: What is Fission and Fusion?

Fission: The breaking down of a Nucleus (not atom) into
smaller nuclei. It is usually induced by a neutron.
For example, a Helium nucleus (called alpha particle) is
divided into two 4He(+2) --> 2H(+1) + 2H(+1)
A lot of enery is released in the process.

Fusion: This happens when two nuclei combines to form a
larger nuclei. Huge amount of enery is needed to start
this. Because its not easy to bring two positively charged
nuclei closer.
When they combine, a huge amount of energy is released.
This usually happens in the stars.
The enery required to start the fusion comes from the
gravitational force between the particles.
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