Physics
When a vehicle passes, TV reception gets distorted. This is because

Modern vehicles use electroignition system
Metal reflects radiowaves
Vehicle pollution affects the performance of the TV components
Spark plug creates electromagnetic disturbances

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Physics
Energy in reflected light :

Becomes maximum for angle of incidence equal to 45°
Decreases with the increase in angle of incidence
Does not depends on the angle of incidence
Increases with the increase in angle

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