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# Year 11 Physics

## Module 3 | Waves and thermodynamics

### Content 4: Ray model of light

#### Lesson 1 | Lenses

• conduct a practical investigation to analyse the formation of images in mirrors and lenses via reflection and refraction using the ray model of light (ACSPH075)

#### Lesson 2 | Mirrors

• conduct a practical investigation to analyse the formation of images in mirrors and lenses via reflection and refraction using the ray model of light (ACSPH075)

#### Lesson 3 | Total internal reflection

• conduct investigations to examine qualitatively and quantitatively the refraction and total internal reflection of light (ACSPH075, ACSPH076)

#### Lesson 4 | Snell's Law

• predict quantitatively, using Snell’s Law, the refraction and total internal reflection of light in a variety of situations

#### Lesson 5 | Dispersion of light

• conduct a practical investigation to demonstrate and explain the phenomenon of the dispersion of light

#### Lesson 6 | Inverse square law

• conduct an investigation to demonstrate the relationship between inverse square law, the intensity of light and the transfer of energy (ACSPH077)

• solve problems or make quantitative predictions in a variety of situations by applying the following relationships to:
– $n_{x} = \frac{c}{v_{x}}$ – for the refractive index of medium x, vx is the speed of light in the medium
$n_{1}sin\left ( i \right ) = n_{2}sin\left ( r \right )$ (Snell’s Law)
$sin\left ( i_{c} \right ) = \frac{1}{n_{x}}$ – for the critical angle ic of medium x
$I_{1}r^{2}_{1} = I_{2}r^{2}_{2}$ – to compare the intensity of light at two points, r1 and r2