Cambridge IGCSE 0625: Wave Properties, Transverse & Longitudinal Waves | Tutolia Study Library

Understand wave speed equation v = f * lambda, wavefronts, reflection, refraction, and diffraction through gaps for Cambridge IGCSE 0625.

Subject: Physics | Grade Level: Grade 9-10 (IGCSE) | Curriculum: Cambridge IGCSE

Cambridge IGCSE: Wave Properties, Transverse & Longitudinal Waves (Physics)

Syllabus Code: 0625 · Topic Code: 3.1 · Level: Grade 9-10 (IGCSE)

Aligned with official Cambridge IGCSE examination standards and assessment objectives.

🎯 Official Syllabus Learning Objectives

Candidates should be able to:

[x] Distinguish between transverse waves (crests and troughs) and longitudinal waves (compressions and rarefactions)
[x] Recall and apply the wave speed equation v = f * lambda
[x] Describe diffraction when waves pass through a gap comparable to wavelength

📐 Essential Formulas & Mathematical Equations

v = f \cdot \lambda

f = \frac{1}{T}

💡 Conceptual Breakdown & Core Revision Notes

Mastering Wave Properties, Transverse & Longitudinal Waves is critical for scoring Grade 9 / A* in Cambridge IGCSE Physics. When preparing for exam papers, examiners prioritize precise definitions, proper scientific command-word execution (State, Describe, Explain, Evaluate), and dimensional unit consistency.

Methodical Problem-Solving Framework

List Given Variables: Write down all given quantities with their respective SI units and identify the target variable.
Standardise Units: Always convert non-standard units (e.g. grams to kilograms, centimeters to meters, cm³ to dm³, hours to seconds).
State the Base Formula: Always state the general equation explicitly before substituting numbers to secure method marks.
State Final Value with Units: Quote your final calculated value to the required number of significant figures (typically 2 or 3 significant figures in Cambridge & IB) followed by the correct unit.

⚠️ Examiner Warnings & Common Student Pitfalls

Chief Examiner Advice:

When light or water waves refract into a slower medium, speed and wavelength decrease, but frequency remains constant!

📝 Worked Exam Exemplar (Mark Scheme Breakdown)

Question:

A sound wave with frequency 440 Hz travels at 330 m/s in air. Find its wavelength.

Model Answer & Marking Rubric:

Formula: lambda = v / f = 330 / 440 = 0.75 meters.

🧠 Rapid Active-Recall Study Deck (Spaced Repetition)

Test your immediate retention before leaving this page:

Question: What is the fundamental definition associated with Wave Properties, Transverse & Longitudinal Waves?

Answer: Check the primary learning objective in the checklist above.

Question: Which governing formula links the main physical quantities in this topic?

Answer: `v = f \cdot \lambda`.

Question: What classic trap do examiners frequently set on this topic?

Answer: When light or water waves refract into a slower medium, speed and wavelength decrease, but frequency remains constant!