Skip to main content
Super TutorResources
Chapter 10 of 14
Revision Notes

Nucle — Revision Notes

Madhya Pradesh Board · Class 12 · Physics

Nucle revision notes for Madhya Pradesh Board Class 12 Physics: 4 topics in quick points. Part of the Madhya Pradesh Board Class 12 Physics syllabus.

93 questions64 flashcards14 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Nucle? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

Free trial, no card needed.

A graph showing the binding energy per nucleon as a function of mass number, highlighting regions of stability, and explaining nuclear fission and fusion processes.
Super Tutor

One of 15 illustrations for Nucle in Super Tutor — alongside flashcards, concept maps and practice questions.

Key Topics to Revise

1

1. Basic structure of the nucleus

  • An atom has a small, dense, positively charged nucleus at its centre.
  • The radius of a nucleus is about 10^4 times smaller than the radius of an atom.
  • The volume of a nucleus is about 10^-12 times the volume of the atom.
2

2. Atomic masses, isotopes, isobars, and isotones

  • Atomic masses are measured in atomic mass unit, u, because kilogram is too large for atomic-scale masses.
  • 1 u is defined as 1/12 of the mass of one 12C atom.
  • Atomic masses of many elements are close to integral multiples of hydrogen mass, but chlorine is a notable exception with atomic mass 35.46 u.
3

3. Discovery of neutron and neutron properties

  • James Chadwick verified the existence of the neutron in 1932 by bombarding beryllium nuclei with alpha-particles.
  • Chadwick was awarded the 1935 Nobel Prize in Physics for the discovery of the neutron.
  • A free neutron is unstable and decays into a proton, an electron, and an antineutrino.
4

4. Nuclear size and density

  • Rutherford established the existence of the atomic nucleus through alpha-particle scattering.
  • Geiger and Marsden performed the classic alpha-particle scattering experiment on thin gold foils.
  • For a 5.5 MeV alpha particle, the distance of closest approach to gold nucleus is about 4.0 × 10^-14 m.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

Atomic masses are measured in atomicThe proton is the nucleusThe neutron is a neutral particleThe mass number is given byIsotopes have the same atomic number

Frequently Asked Questions

What are the important topics in Nucle for Madhya Pradesh Board Class 12 Physics?
Key topics in Nucle include Basic structure of the nucleus, Atomic masses, isotopes, isobars, and isotones, Discovery of neutron and neutron properties, Nuclear size and density. Study these first, then practise questions on each for the Madhya Pradesh Board Class 12 board exam.
How should I revise Nucle for the Madhya Pradesh Board Class 12 board exam?
Learn the core ideas first, then work through the 93 practice questions on Nucle. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Nucle

All Madhya Pradesh Board Class 12 Physics Revision Notes

For serious students

Get the full Nucle chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for Madhya Pradesh Board Class 12 Physics. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free