# Reflection and Refraction Practicals

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A series of free GCSE/IGCSE Physics Notes and Lessons.

### Refraction & Reflection of Light

Investigate the reflection of light by different types of surface and the refraction of light by different substances.

In this practical you will:

• use a ray box to direct a ray of light onto the surface of a transparent block
• mark the path of the ray that is reflected from the surface of the block
• mark the path of the ray that passes through the block
• use different materials and compare the results.

The following diagram shows the incident ray, reflected ray, refracted ray and transmitted ray using a glass block.

Required Practical: Reflection and Refraction
Describe how to investigate the reflection of light by different types of surface and the refraction of light by different substances.

Refraction & Total Internal Reflection - GCSE Science Required Practical
How to measure the angles of incidence and refraction to calculate refractive index, and how to find the critical angle for Total Internal Reflection.
00:00 Measuring angles
05:00 Refractive index
06:27 Analysing data
07:00 TIR - Total Internal Reflection

Required Practical - Reflection and Refraction
How to compare reflection and refraction by two different materials (perspex and glass)?

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