Oscillations and Waves
Learn the key concepts of Oscillations and Waves for A/L Physics, explained simply · Aligned with the NIE syllabus
Where this fits in the syllabus
Grade 1 · Term 2
What you'll learn
Learn the key concepts of Oscillations and Waves for A/L Physics, explained simply
About A/L Physics: The A/L Physics syllabus is structured across two academic years, covering fundamental and advanced topics in mechanics, waves, electricity, and modern physics. Every topic on Idasara Academy is mapped directly to the NIE curriculum.
Reflection
The bouncing back of a wave when it encounters a boundary between two media.
The angle of incidence equals the angle of reflection (measured from the normal). For a fixed boundary (e.g., a rigid wall), a reflected pulse inverts (phase change of π). For a free boundary, no inversion occurs. Example: Sound echoing off a cliff; light reflecting from a mirror.
Refraction
The change in direction of a wave as it passes from one medium to another due to a change in speed.
When a wave enters a medium where its speed decreases (e.g., light from air to glass), it bends toward the normal. If speed increases, it bends away. The frequency remains constant; wavelength changes proportionally to speed. Example: A straw appearing bent in a glass of water.
Source: Idasara knowledge pack — english/AL_SCIENCE/physics v19, short_notes: Lesson 3.3 - Wave Phenomena (Reflection, Refraction, Diffraction, Interference)
Study these first
Builds toward
Related Topics
In the Syllabus
Start learning Oscillations and Waves today
Free AI study coach, daily plans and practice questions. No payment required.
Create Free Account Free Quiz