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Nuclei — Study Plan

OJEE · Physics

Step-by-step Nuclei study plan for OJEE Physics 2026 — structured month-wise approach to mastering this chapter.

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A diagram illustrating the vast difference in size between an atom and its nucleus, showing the nucleus as a tiny dot at the center of a much larger electron cloud.
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How to Study Nuclei

A structured approach to studying Nuclei for OJEE Physics.

Study Plan for Nuclei

1

Day 1–2: Learn the Theory

Study the chapter thoroughly. Note down definitions, formulas, and key concepts.

2

Day 3: Practice Problems

Solve practice questions and previous year OJEE problems. There are 334 questions available for this chapter.

3

Day 4: Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding.

What to Focus On

  • Nucleus occupies ~10^-15 times the volume of an atom
  • Contains nearly all atomic mass
  • Atoms are mostly empty space

  • 1 amu = 1.66054 × 10^-27 kg = 931 MeV/c²
  • Proton mass = 1.007276 u, rest energy = 938.28 MeV
  • Neutron mass = 1.008665 u, rest energy = 939.57 MeV

  • R = R₀A^(1/3) where R₀ = 1.2 fm
  • Nuclear volume ∝ mass number A
  • Nuclear density = 2.29 × 10^17 kg/m³ (constant for all nuclei)

Common Mistakes to Avoid

Mass number A equals the actual mass of the nucleus in kg

Binding energy is the energy stored inside the nucleus that can be extracted

In radioactive decay equations, mass number and charge must be balanced on both sides separately

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Frequently Asked Questions

What topics are covered in Nuclei for OJEE?
Nuclei is an important chapter in OJEE Physics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Atomic Masses and Composition of Nucleus, Size of the Nucleus, Mass-Energy and Nuclear Binding Energy, Nuclear Force.
How important is Nuclei for OJEE?
Nuclei is a frequently tested chapter in OJEE Physics. Questions from this chapter appear regularly in previous year papers. There are 334 practice questions available for this chapter.
How to prepare Nuclei for OJEE?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.

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