Reflection, refraction and lenses

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Question 4
Easy

A student investigates how light refracts as it passes from air into a perspex block.

They record the angle of incidence, θ1\theta_1θ1​, and the angle of refraction, θ2\theta_2θ2​, for several different angles.

Perspex Refraction Data

Angle of incidence, θ1\theta_1θ1​ (∘^{\circ}∘)Angle of refraction, θ2\theta_2θ2​ (∘^{\circ}∘)
00
1510
3019.5
4528
6035
7540.5

Using the data, they plot the points on the grid in Figure 5.

Figure 5: A graph grid with 'Angle of incidence, \theta_1 (^{\circ})' on the x-axis scale from 0 to 80 and 'Angle of refraction, \theta_2 (^{\circ})' on the y-axis scale from 0 to 50. Six data points are plotted as 'x' marks at: (0, 0), (15, 10), (30, 20), (45, 28), (60, 35), and (75, 40.5).

On the graph in Figure 5, draw the curve of best fit.

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Reflection, refraction and lenses Questions

  1. GCSE
  2. /Physics
  3. /Reflection, refraction and lenses