Observe the ray as it passes through the glass. Mark the exit point on the opposite side of the plate.
Connect the entry and exit points to visualize the refracted ray inside the glass. Use a protractor to measure the angle of incidence ( ) and the angle of refraction ( Observe the ray as it passes through the glass
Calculate the refractive index for each trial using the formula Observe the ray as it passes through the glass
To measure the absolute refractive index of a glass plate using Snell's law. Observe the ray as it passes through the glass
Repeat the measurements for different angles of incidence to ensure accuracy. 3. Data Analysis
n=sinαsinβn equals the fraction with numerator sine alpha and denominator sine beta end-fraction