Dinesh Amarathunga Physics Books

Dinesh Amarathunga is a prominent Sri Lankan author and educator known for his specialized physics and mathematics literature

. His work primarily targets Advanced Level (A/L) students, focusing on simplifying complex concepts through "short methods" and exam-oriented summaries. Grantha.lk Core Physics Book Series

Amarathunga has authored a comprehensive set of physics books, often published through Samadhi Publications , covering major units of the Sri Lankan A/L syllabus:

(යාන්ත්‍ර විද්‍යාව කෙටි ක්‍රම පොත) Oscillations and Waves

(දෝලන හා තරංග කෙටි ක්‍රම පොත) Light/Optics (ආලෝකය කෙටි ක්‍රම පොත) Thermal Physics dinesh amarathunga physics books

(තාප භෞතිකය කෙටි ක්‍රම පොත) Gravitational & Electric Fields Electronics & Magnetic Properties of Matter Current Electricity & Electromagnetism Educational Format and Accessibility Short Notes & Revision:

His books are frequently marketed as "short method" books (කෙටි ක්‍රම), designed to help students grasp every lesson quickly for competitive examinations. Language & Medium:

While many of his primary works are in Sinhala for the local curriculum, English medium versions of his " Physics Short Notes " (Grade 10-11) and " A/L Past Papers with Model Answers " are also available through retailers like Grantha.lk Alternative Works:

Beyond physics, he has authored popular mathematics guides such as " The Secrets of Mathematics Grantha.lk Author Background Dinesh Amarathunga is a prominent Sri Lankan author

Dinesh Amarathunga is an Electrical and Electronic Engineer and an attorney-at-law. His diverse professional background often influences his writing style, which emphasizes logical problem-solving and structured learning. specific retail locations for these books in Sri Lanka? Dinesh amarathunga physics book A/L sinhala medium

These features are tailored to highlight why his books are popular among students preparing for exams.

Volume 1 – Mechanics & Properties of Matter

  • Key topics: Vectors, kinematics, Newton’s laws, friction, work-energy-power, circular motion, gravitation, rotational dynamics, elasticity, fluid statics/dynamics, surface tension, viscosity.
  • Unique strength: Diagrams with real-world examples (e.g., why a car skids, how blood flows).
  • Problem style: Starts with simple numeric problems, progresses to exam-level combined concept problems (e.g., friction + circular motion on banked tracks).

4. Product Description (eCommerce style)

Title: Dinesh Amarathunga – Physics Structured & Essay Questions – Unit 05 (Electricity & Magnetism)

Description: Prepare for the G.C.E. Advanced Level Physics examination with Sri Lanka’s most trusted problem collection. Volume 1 – Mechanics & Properties of Matter

  • Format: Paperback, ~320 pages
  • Medium: English / Sinhala (separate editions)
  • Contents: Over 600 original and past-paper questions covering Coulomb’s Law, Electric Fields, Magnetic Induction, and A.C. Circuits.
  • Bonus: Complete, handwritten-style answer key at the back.
  • Suitable for: Local A/L (new & old syllabus) and Cambridge/Edexcel students needing advanced problem practice.

Why buy? Students who complete this book report a 30% faster MCQ solving time in exams.

Price: LKR 950 – 1,200 (varies by retailer)

Who Should Use These Books?

  • G.C.E. A/L (Combined Maths) Students: Essential for physics paper practice.
  • Tutors & Teachers: For setting assignments and exam-style tests.
  • Repeating / Self-Study Students: Structured, standalone practice material.
  • University Entrance Exam Prep (e.g., Engineering, Physical Science aspirants): Useful for foundational problem-solving.

1. Mechanics (Volume I)

This is often the first encounter students have with the author’s style. The Mechanics volume covers:

  • Units and Dimensions: A meticulous introduction to SI units, significant figures, and error analysis.
  • Statics and Dynamics: Forces, friction, and Newton’s laws are presented using clear vector diagrams.
  • Rotational Motion & Circular Motion: Amarathunga excels here, breaking down centripetal force and angular momentum into digestible sections.
  • Work, Energy, and Power: The explanation of conservation laws is particularly praised for its logical flow.