Chapter 24 of 28
Formula Sheet
Atoms — Formula Sheet
AP EAPCET · Physics
Free Atoms formula sheet for AP EAPCET Physics 2026 — all important formulas, equations, and constants for quick reference.
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Important formulas and equations from Atoms for AP EAPCET Physics.
Formulas — Atoms
Rutherford's Alpha-Particle Scattering
b = (Ze²cot(θ/2))/(4πε₀Eₖ)r₀ = (2Ze²)/(4πε₀Eₖ)N ∝ 1/sin⁴(θ/2)Bohr Model of Hydrogen Atom
mvr = nh/2πrₙ = (0.53 × n²)/Z ÅEₙ = -13.6Z²/n² eVvₙ = (2.18 × 10⁶ × Z)/n m/sAtomic Spectra and Spectral Series
1/λ = R(1/nf² - 1/ni²)1/λ = R(1/1² - 1/n²), n = 2,3,4...1/λ = R(1/2² - 1/n²), n = 3,4,5...1/λ = R(1/3² - 1/n²), n = 4,5,6...X-rays and Characteristic Radiation
λmin = hc/eV = 1242/V nmλ = hc/(EK - EL) for KαGet the complete formula sheet with derivations — continue in Super Tutor
Frequently Asked Questions
What topics are covered in Atoms for AP EAPCET?
Atoms is an important chapter in AP EAPCET Physics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Rutherford's Alpha-Particle Scattering Experiment, Bohr's Model of Hydrogen Atom, Atomic Spectra and Spectral Series, X-ray Spectra and Characteristic X-rays.
How important is Atoms for AP EAPCET?
Atoms is a frequently tested chapter in AP EAPCET Physics. Questions from this chapter appear regularly in previous year papers. There are 243 practice questions available for this chapter.
How to prepare Atoms for AP EAPCET?
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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