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Formula Sheet

Nuclei — Formula Sheet

J&K CET · Physics

Free Nuclei formula sheet for J&K CET Physics 2026 — all important formulas, equations, and constants for quick reference.

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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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Formula Sheet — Nuclei

Important formulas and equations from Nuclei for J&K CET Physics.

Formulas — Nuclei

Nuclear Composition and Size

R = R₀ × A^(1/3)
ρ = 2.29 × 10¹⁷ kg/m³
Volume = (4/3)πR³

Mass-Energy and Binding Energy

E = mc²
ΔM = [Z·mₚ + (A-Z)·mₙ] - M
Eᵦ = ΔM × c² = ΔM × 931 MeV
BE per nucleon = Eᵦ/A

Radioactivity and Decay

N(t) = N₀e^(-λt)
T₁/₂ = 0.693/λ = ln(2)/λ
A = λN = dN/dt
N = N₀/2^n

Nuclear Reactions

Q = (m_initial - m_final) × c² = (m_initial - m_final) × 931 MeV
For fission: Q ≈ 200 MeV per U-235
For fusion: 4¹H → ⁴He + 26.7 MeV

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Frequently Asked Questions

What topics are covered in Nuclei for J&K CET?
Nuclei is an important chapter in J&K CET 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 J&K CET?
Nuclei is a frequently tested chapter in J&K CET 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 J&K CET?
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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