Question

Why electric poles appear bent when seen from far?

Answer 1

Because of the changing atmosphere its optical density changes because of which the far pole appears to be bent.

Answer 2

Electric poles appear bent when seen from far due to the phenomenon of refraction of light. As the poles are viewed from a long distance the atomosphere at the place where the observer is located is different from that of the poles. As a result the optical density of the atmosphere at these two places are also different and therefore refraction of light occurs. So the electric poles appear bent.