Q1PhysicsUnit 18: Atoms and Nuclei
Which of the following pairs are isotopes?
Physics · JEE
Composition and size of nucleus, atomic masses, mass-energy relation, mass defect Short Tricks for JEE
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Part of Atoms and Nuclei in JEE Main Physics.
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Q2PhysicsUnit 18: Atoms and Nuclei
Assertion
The mass of a nucleus can be either
less than or more than the sum of the
masses of nucleons present in it.
Reason
The whole mass of the atom is
concentrated in the nucleus.
Q3PhysicsUnit 18: Atoms and Nuclei
The missing particle in the reaction:
Q4PhysicsUnit 18: Atoms and Nuclei
A radioactive material decays by simultaneous emission of two particles with half-lives 1620 yr and 810 yr respectively. The time in years after which one-fourth of material remains, is
Q5PhysicsUnit 18: Atoms and Nuclei
Assertion
A nucleus having enrgy decays by emission to daughter nucleus having
energy but the -rays are emitted with a continuous energy spectrum
having end point energy
Reason
To conserve energy and moment in
decays at least three particles must
take part in the transformation.
Q6PhysicsUnit 18: Atoms and Nuclei
When a radioactive nucleus emits a particular, the proton- neutron ratio
Q7PhysicsUnit 18: Atoms and Nuclei
and - particles emitted when uranium nucleus decay to are
Q8PhysicsUnit 18: Atoms and Nuclei
Beta particles are essentially:
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