What is reflection in RF signals?

What is reflection in RF signals?

• A. When a signal hits an object and is reflected off at an angle, losing some energy in the process.
• B. When a signal passes through a boundary and speeds up.
• C. When a signal is amplified with no loss of energy.
• D. When a signal is absorbed completely by the medium.

Answer: (A)

Reflection is the bouncing back of part of an RF wave when it meets a boundary. The wave changes direction and often travels back toward the source, typically at an angle related to the incident angle. Some of the energy is lost to absorption, scattering, or other losses at the boundary, so not all of it is transmitted or reflected perfectly. On a smooth surface, the angle of reflection equals the angle of incidence, though real objects can scatter energy in various directions and with varying strength. That matches the idea of a signal hitting an object, reflecting off at an angle, and losing some energy in the process. The other options describe refraction (changing speed and bending when crossing into a different medium), amplification, or complete absorption, none of which capture the bounce-back behavior of reflection.

Reflection is the bouncing back of part of an RF wave when it meets a boundary. The wave changes direction and often travels back toward the source, typically at an angle related to the incident angle. Some of the energy is lost to absorption, scattering, or other losses at the boundary, so not all of it is transmitted or reflected perfectly. On a smooth surface, the angle of reflection equals the angle of incidence, though real objects can scatter energy in various directions and with varying strength. That matches the idea of a signal hitting an object, reflecting off at an angle, and losing some energy in the process. The other options describe refraction (changing speed and bending when crossing into a different medium), amplification, or complete absorption, none of which capture the bounce-back behavior of reflection.