Describe an investigation a student could complete in order to obtain similar data to that given in Table 3 - AQA - GCSE Physics - Question 5 - 2018 - Paper 1

Set Up the Experiment: Place a glass block on a flat piece of paper.

Mark the Path: Draw around the glass block and then carefully remove it. Use a ruler to draw a normal line at a right angle (90°) to one side of the block.

Using a Protractor: Repeat the process by using a protractor to measure and draw a line at an angle of 20° to the normal line.

Replace the Glass Block: Put the glass block back in its original position over the drawn lines.

Light Ray Setup: Using a ray box, direct a beam of light from the light source through the drawn line at the angle of incidence.

Mark the Refraction: Mark the ray of light exiting the glass block and draw a line along this path to show the refracted ray.

Measure the Angles: Use a protractor to measure the angles of incidence and refraction at the glass-air interface.

Repeat the Procedure: Conduct the experiment multiple times at different angles of incidence to gather sufficient data.

Source of Inaccuracy: A possible source of inaccuracy could be the difficulty in determining the exact point where the center of the ray meets the glass, which could lead to slight variations in angle measurements.