Final answer:
Using Snell's Law, n1 * sin(θ1) = n2 * sin(θ2), and the given values for the indices of refraction and the angle of incidence, the angle of refraction when light enters a glass slab from air is approximately 16.1 degrees.
Step-by-step explanation:
The subject of this question is the phenomenon of refraction, which falls under the category of Physics. The student is in High School and needs to understand how the angle of refraction is calculated when a beam of light passes from one medium to another with different indices of refraction.
When light goes from a less dense medium (like air) to a denser medium (like glass) at an incident angle, the beam of light bends towards the normal, a line perpendicular to the surface at the point of incidence. We can calculate the angle of refraction using Snell's Law, which states that n1 * sin(θ1) = n2 * sin(θ2), where n1 and n2 are the indices of refraction for the first and second mediums, and θ1 and θ2 are the angles of incidence and refraction respectively.
Given the index of refraction of air (approximately 1.00) and the index of refraction of glass (1.80), along with the angle of incidence (30.0 degrees), we have: 1.00 * sin(30.0) = 1.80 * sin(θ2). Solving for θ2 (the angle of refraction), we obtain an angle of refraction of approximately 16.1 degrees, which corresponds to option C.