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Light – What’s tested in O Level Physics

light chapter for O Level Physics. Here we learn reflection, refraction and converging lens.

In this post, let’s talk about what’s tested in the topic of light in O Level Physics.

In this video here, I go through in detail what’s tested for light in O Level Physics.

Below, you’ll find a checklist on the items you would need to know on this topic on transfer of light.

Checklist for O Level Physics Topic: Light

Reflection

What is reflection, normal, angle of reflection, and angle of incidence

Laws of reflection

Drawing of ray diagrams for reflection

Refraction

Define refraction

Laws of refraction

Calculations using formula n = sin i/ sin r (where n = refractive index of medium, i = angle of incidence in air or vacuum, r = angle of refraction in medium)

Critical angle and total internal reflection

Define critical angle (c) and total internal reflection

Conditions for total internal reflection

Calculation using formula: n = 1/ sin c (where n = refractive index of medium, c = critical angle)

Lens

describe what happens to a beam of light when shone on a converging or diverging lens

drawing ray diagrams for converging lens

define focal length (for converging lens)

Watch the video below to learn the points in detail: