Question

Advanced sunrise and delayed sunset are phenomenacaused due to atmospheric refraction. ... When the rays from the sun hit the atmosphere they get refracted. Due to this the sun appears to be at an apparent position which suggests that it has alrea

Answer 1

unrise and sunset are the instants when the upper edge of the Sun appears and disappears over the horizon respectively as a result of Earth's rotation. ... At a result, when sunlight passes through the atmosphere, successive refraction occurs and bends the sunlight towards the ground (see Figure 1).