A student performs an experiment to investigate the refraction and reflection of light using a rectangular transparent block on a ray-trace sheet. They record the following measurements from their completed ray-tracing diagram:

Length of line $L G$ , $6.6\text{ cm}$
Length of line $L K$ , $4.4\text{ cm}$
Angle of incidence, $θ=40.0∘\theta = 40.0^\circ$
Reflected/refracted return angle, $α=38.0∘\alpha = 38.0^\circ$

Calculate the refractive index $n$ of the block using the equation:

\frac{a}{b}

Another student suggests that angle $α\alpha$ and angle $θ\theta$ should be equal. State whether the student's results support this suggestion and justify your answer.

Suggest two practical reasons why different students, all carrying out this experiment carefully, may not obtain identical results for their measurements.

Length of line $L G$ , $6.6\text{ cm}$
Length of line $L K$ , $4.4\text{ cm}$
Angle of incidence, $θ=40.0∘\theta = 40.0^\circ$
Reflected/refracted return angle, $α=38.0∘\alpha = 38.0^\circ$

Calculate the refractive index $n$ of the block using the equation:

\frac{a}{b}

Another student suggests that angle $α\alpha$ and angle $θ\theta$ should be equal. State whether the student's results support this suggestion and justify your answer.

Suggest two practical reasons why different students, all carrying out this experiment carefully, may not obtain identical results for their measurements.

3.2.2 Refraction of light

Question 1

Markscheme

3.2.2 Refraction of light

Question 1

Markscheme

3.2.2 Refraction of light

Question 1

3.2.2 Refraction of light Questions

3.2.2 Refraction of light

Question 1

3.2.2 Refraction of light Questions