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Leaving Cert Physics Exam Predictions 2025

Get exam-ready with our expert breakdown of likely topics, experiments, and long questions for 2025.

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What to Expect from Physics in 2025

With the 2025 Leaving Cert Physics paper fast approaching, we've analysed trends from 2020-2024, including deferred papers, to give you the most accurate predictions possible. Here's everything you should focus on.

🔬 Section A - Experiments ( 3 from 5)

Expect one experiment each from Mechanics and Electricity, with two more likely from Light, Heat, or Sound.

  • Mechanics: Simple Pendulum, Conservation of Momentum, Boyle's Law

  • Light/Heat/Sound: Snell's Law, Specific Heat Capacity, Joule's Law, Frequency vs 1/Length

  • Electricity: Thermistor or Metallic Conductor - Resistance vs Temperature

✅ Pro Tip: Focus on graphs, real-life applications, and typical sources of error in each experiment.

🧠 Section B - Long Questions ( 5 from 9)

📌 Question 6 - Short Questions ( 8 from 12)

Cover all topics - ideal for quick wins. Be clear, concise, and move on quickly.

🛠️ Question 7 - Mechanics

  • Gravity & Newton's Law

  • Pressure, Fluids & Density

🌊 Q8-Q12 - Variety of Topics

  • Static electricity & electromagnetic induction

  • Mirrors, lenses, wave motion

  • Nuclear physics & radioactivity

  • Wheatstone bridge, Resistance graphs (I vs V)

  • Options: Particle Physics or Applied Electricity

✨ Question 14 - Conceptual Mix

  • Simple Harmonic Motion (SHM)

  • Refraction and Prisms

  • Doppler Effect

  • Photoelectric Effect

General Patterns in LC Physics Question

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At least one Mechanics and one Electricity experiment appears every year.

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Questions 5 and 13 cover short questions from a wide range of topics.

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Q6 often focuses on Mechanics, SHM, or Gravity.

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Q7 usually includes Heat, Light, or Sound.

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Q8 typically covers Electromagnetism, Electricity, or Nuclear Physics. 

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Q10 commonly relates to Particle Physics and Applied Electricity.

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Q11 is a comprehension-style mixed topic question.

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Q12 generally includes 4 mini-sections from across the course.

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📊 What Came Up in 2020-2024?

Here's a snapshot of what's been tested most often:

  • 2024: F vs a, Lens, Fusion of Ice, Radioactivity, Capacitors

  • 2023: Free fall, Mirror, Joule's law, Sound

  • 2022: Boyle's law, Snell's law, Joule's law, SHM

  • 2021: Pendulum, Resistance, Newton's law

  • 2020: Conservation of momentum, Snell's law, Radioactivity

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📄 Deferred Papers - Do They Matter?

Yes - and no. The SEC usually avoids repeating experiments year-to-year. But in 2023, two experiments from the 2023 deferred paper were reused in 2024.

Plus, the 2022 deferred paper had three overlaps with the 2023 paper.

👀 Watch this space: If the 2024 deferred paper is released soon, study it closely.

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