Q1PhysicsUnit 18: Atoms and Nuclei
When a gold sheet is bombarded by a beam of -particles, only a few of them
get deflected whereas most go straight,
undeflected because:
This question has multiple correct options
Physics · JEE
Atoms and Nuclei Concepts for JEE
130+ syllabus-aligned questions available
Quick answer
Master Atoms and Nuclei by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.
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Concept explainer
Concept overview for Atoms and Nuclei covering 4 JEE syllabus subtopics including Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, atomic masses, mass-energy relation, mass defect.
Key points
- Understand the definition and scope of Alpha-particle scattering experiment, Rutherford's model of atom in the JEE syllabus
- Memorise key formulas and standard results linked to Alpha-particle scattering experiment, Rutherford's model of atom
- Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
- Understand the definition and scope of Bohr model, energy levels, hydrogen spectrum in the JEE syllabus
- Memorise key formulas and standard results linked to Bohr model, energy levels, hydrogen spectrum
- Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
JEE tips
- Revise Alpha-particle scattering experiment, Rutherford's model of atom with a one-page formula sheet before attempting mixed tests
- After each practice set, log mistakes specific to Alpha-particle scattering experiment, Rutherford's model of atom and reattempt after 48 hours
- Revise Bohr model, energy levels, hydrogen spectrum with a one-page formula sheet before attempting mixed tests
- After each practice set, log mistakes specific to Bohr model, energy levels, hydrogen spectrum and reattempt after 48 hours
Common trap
Students often rush Alpha-particle scattering experiment, Rutherford's model of atom questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.
JEE Formula Sheet
6+ important formulas for Atoms and Nuclei
Subtopics in Atoms and Nuclei
- Alpha-particle scattering experiment, Rutherford's model of atom
- Bohr model, energy levels, hydrogen spectrum
- Composition and size of nucleus, atomic masses, mass-energy relation, mass defect
- Binding energy per nucleon and its variation with mass number, nuclear fission and fusion
View Atoms and Nuclei formula sheet — 6+ JEE formulas
Free sample questions
Attempt 8 free MCQs for Atoms and Nuclei. Unlock 122+ more with Pro.
Q2PhysicsUnit 18: Atoms and Nuclei
Which of the following pairs are isotopes?
Q3PhysicsUnit 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.
Q4PhysicsUnit 18: Atoms and Nuclei
Assertion
It is not possible to use as the fuel
for fusion energy.
Reason
The binding energy of is too small.
Q5PhysicsUnit 18: Atoms and Nuclei
Which of the following reasons make
nuclear waste an extremely potent
pollutant?
This question has multiple correct options
Q6PhysicsUnit 18: Atoms and Nuclei
When a hydrogen atom is raised from the ground state to an excited state.
Q7PhysicsUnit 18: Atoms and Nuclei
One of the characteristics of nuclear
reactions is that in their decayed or fused parts
Q8PhysicsUnit 18: Atoms and Nuclei
Hydrogen bomb is based on
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Frequently asked questions
What concepts in Atoms and Nuclei are essential for JEE?
Focus on core ideas across Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, atomic masses, mass-energy relation, mass defect, Binding energy per nucleon and its variation with mass number, nuclear fission and fusion. JEE tests application, not just memorisation.
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