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C1Difficulty 3/5

In a conventional headlamp with a bulb and reflector, how should light be directed to fulfil its lighting function?

Correct answer

in the direction and with the characteristics necessary for the illumination to be effective.

In the direction and with the characteristics needed to illuminate the road effectively, respecting beam adjustment and avoiding dazzling. The reflector and optical elements shape the beam; the aim is not indiscriminate light in every direction. This describes the stated headlamp type without claiming every modern system has the same design.

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  • emitting rays in all directions.

  • in the direction and with the characteristics necessary for the illumination to be effective.

  • so that the emitted rays are divided separately between those that come out sideways and those that come out frontally.

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