) of a medium shows how many times the speed of light in a vacuum ( ) is greater than its speed in the medium (

Repeat the measurements for different angles of incidence to ensure accuracy. 3. Data Analysis

Observe the ray as it passes through the glass. Mark the exit point on the opposite side of the plate.

Laboratory Work No. 3: Determination of the Refractive Index of Glass

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 (