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Secondaire 5 • 8m

F and 2F should be primed behind the lens not in front. Unless my textbook is wrong.

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Physique
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Explications (1)

  • Explication d'Alloprof

    Explication d'Alloprof

    Cette explication a été donnée par un membre de l'équipe d'Alloprof.

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    Équipe Alloprof • 8m

    Hello PeacefulPumpkin8091,

    Thank you very much for your question! I don't see anything wrong with the drawings. Indeed, the focal point (F) is located on the side of the incident rays, while the secondary focal point (F’) is located on the opposite side of the primary focal point. Here's a fact sheet on lenses that might help you :

    I hope I've answered your question. Don't hesitate to write back if you have any lingering questions!

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