Reflected apparent temperature refers to energy sources that could be reflected into the camera.

• A. The true temperature of the object
• B. All sources of energy that could be reflected into the camera
• C. The ambient temperature
• D. The camera's internal temperature

Answer: (B)

Reflected apparent temperature comes from the energy in the environment that can reflect off the object's surface into the camera. In infrared imaging, what the camera records is a mix of emitted energy from the object and reflected energy from surrounding sources (sun, heaters, machinery, ambient room radiance, etc.), plus some contribution from the camera itself. The “reflected” part is best described by all energy sources in the scene that could be reflected toward the camera, not just the object’s own temperature, not only ambient temperature, and not the camera’s internal heat. So the correct idea is that reflected apparent temperature represents the influence of every external energy source that could be reflected into the camera.