What law explains the angle of transmission at an interface based on the angle of incidence and propagation speeds?

• A. Bernoulli's law
• B. Poiseuille's law
• C. Snell's law
• D. Doppler's law

Answer: (C)

The angle of transmission at an interface, which refers to how light or other waves change direction when moving from one medium to another, is explained by Snell's law. Snell's law relates the angles of incidence and refraction to the speeds of the waves in the two different media. Specifically, it states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities of the wave in the two media. This law is crucial for understanding various optical phenomena, such as lens design and the behavior of light in prisms.

In contrast, Bernoulli's law deals with fluid dynamics, specifically the behavior of fluid flow and the relationship between pressure and velocity. Poiseuille's law pertains to the flow of incompressible fluids in pipes, focusing on the viscosity and the pressure drop along the length of the pipe. Doppler's law relates to the change in frequency or wavelength of a wave in relation to an observer moving relative to the source of the wave, which does not pertain to transmission angles. Each of these laws serves a unique purpose within physics, but it is Snell's law that specifically addresses the relationship between incident and transmitted angles in relation to wave