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: