As part of the photoelectric effect, which of these is responsible for the pixels in an image on a digital camera?

Question

accumulated electrons that are absorbed by the image sensor
accumulated electrons that are ejected by the image sensor
accumulated photons that are ejected by the image sensor
accumulated photons that are absorbed by the image sensor

Answer 1

In the context of the photoelectric effect and digital cameras, the correct answer is:

accumulated electrons that are ejected by the image sensor.

In a digital camera, when light (photons) strikes the image sensor (typically a CCD or CMOS sensor), it causes the photoelectric effect, which generates free electrons. These electrons are then accumulated in pixel wells corresponding to the amount of light that struck each pixel. The accumulated electrons are what ultimately get processed to create the image, as they represent the light information collected by the sensor.