Question

Experiment to determine the refractive index of a glass prism FOCAL LENGTH = 9.5cm i° e° d° 30 43 69 40 41 61 45 39 56 50 37 48 65 41 37 plot a graph of d° against i° from the graph Determine; (i) the minimum deviation and the corresponding angle of incidence (ii) the maximum deviation and the corresponding angle of incidence n=sin⁡(A+D÷2)÷(sinA÷2) Determine the error in n and explain why it is not advisable to use small values of i° in performing this experiment. THANK YOU SO MUCH

Answer 1

We are given the data for the angle of incidence and angle of refraction.
The first part of the problem is to plot the deviation and the angle of incidence. The minimum deviation is 37 with 65 degrees as the corresponding angle of incidence. The maximum deviation is 69 with a corresponding angle of incidence of 30 degrees. It is not advisable to use small values for the angle of incidence since it would result to a higher deviation from Snell's Law.