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Recent questions tagged the nucleus
+3
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1
answer
Find the minimum kinetic energy of an α-particle to cause the reaction 14N (α, p) 17O.
asked
Apr 5, 2019
in
Physics
by
kratos
neet
modern physics
aiims
jee
the nucleus
jee mains
class-12
+3
votes
1
answer
An α-particle is bombarded on 14N. As a result, a 17O nucleus is formed and a particle is emitted.This particle is a
asked
Apr 3, 2019
in
Physics
by
kratos
neet
modern physics
jee
the nucleus
jee mains
class-12
atoms
nuclei
+2
votes
1
answer
A photon materializes into an electron-positron pair. The kinetic energy of the electron is found to be 0.19 MeV.
asked
Mar 27, 2019
in
Physics
by
kratos
isc
modern physics
jee
the nucleus
icse
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
When four hydrogen nuclei combine to form a helium nucleus,
asked
Mar 26, 2019
in
Class 12
by
kratos
neet
aiims
origin of the solar system
the nucleus
nuclei
class-12
atoms
structure of atom
+2
votes
1
answer
(a) Assume that in each fission of 235U, 200 MeV is released. Assuming that 5% of the energy
asked
Mar 20, 2019
in
Physics
by
kratos
jee
the nucleus
class-10
icse
jee mains
class-12
nuclear physics
+1
vote
1
answer
Consider a sample of a pure beta-active material. (a) All the beta particles emitted have the same energy.
asked
Mar 15, 2019
in
Class 12
by
kratos
class-12
the nucleus
+1
vote
1
answer
Let Fpp, Fpn and Fnn denote the magnitudes of the nuclear force by a proton on a proton,
asked
Mar 14, 2019
in
Class 12
by
kratos
neet
jee
the nucleus
jee mains
class-12
atoms
nuclei
+3
votes
1
answer
A free neutron decays to a proton but a free proton does not decay to a neutron.
asked
Mar 14, 2019
in
Class 12
by
kratos
class-12
the nucleus
+3
votes
1
answer
Starting with a sample of pure 66^Cu, 7/8 of it decays into Zn in 15 minutes. The corresponding half-life is
asked
Mar 6, 2019
in
JEE
by
kratos
jee
the nucleus
molecules and nuclei
jee mains
class-12
atoms
nuclei
+2
votes
1
answer
The disintegration rate of a certain radioactive sample initially is 4750 disintegrations per minute.
asked
Mar 2, 2019
in
Class 12
by
kratos
neet
jee
aiims
the nucleus
molecules and nuclei
jee mains
class-12
atoms
nuclei
+3
votes
1
answer
To determine the half-life of a radioactive element, a student plots a graph of In |dN(t)/dt| versus t.
asked
Feb 24, 2019
in
JEE
by
kratos
jee main 2020
class-11
the nucleus
properties of matter
class-12
atoms
nuclei
+3
votes
1
answer
238U decays to 200Pb with a half-life of 4.47 x10^9 y. This happens in a number of steps.
asked
Feb 22, 2019
in
Class 12
by
kratos
class-12
the nucleus
+3
votes
1
answer
In which of the following decays the element does not change?
asked
Feb 20, 2019
in
Class 12
by
kratos
class-12
the nucleus
+1
vote
1
answer
The half life of tritium is about:
asked
Feb 17, 2019
in
Chemistry
by
kratos
neet
class-11
jee
surface chemistry
hydrogen
the nucleus
jee mains
nuclear chemistry
class-12
+2
votes
1
answer
Natural water contains a small amount of tritium (3H). This isotope beta-decays with a half-life of 12.5 years.
asked
Feb 17, 2019
in
Chemistry
by
kratos
nuclear chemistry
class-12
the nucleus
neet
+2
votes
1
answer
How much energy is released in the following reaction?
asked
Feb 11, 2019
in
Class 12
by
kratos
class-12
the nucleus
+1
vote
1
answer
A free neutron beta-decays to a proton with a half-life of 14 minutes, (a) What is the decay constant ? (b) Find the energy liberated in the process.
asked
Feb 7, 2019
in
Class 12
by
kratos
class-12
the nucleus
+2
votes
1
answer
The mass of a neutral carbon atom in ground state is (a) exact 12u
asked
Feb 6, 2019
in
Class 12
by
kratos
class-12
atoms
the nucleus
nuclei
+1
vote
1
answer
Which of the following are correct with regard to beta-negative (β-) decay?
asked
Feb 3, 2019
in
Physics
by
kratos
modern physics
jee
the nucleus
jee mains
class-12
atoms
nuclear physics
nuclei
+3
votes
1
answer
In a decay process A decays to B, A → B Two graphs of number of nucli of A and B versus time is given then, which of the following options is
asked
Jan 26, 2019
in
Chemistry
by
kratos
surface chemistry
jee
the nucleus
kinematics
jee mains
nuclear chemistry
class-12
atomic physics
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