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hello my son has Optics unit in school and request help from me. I am not so educated so I come here and ask you

hello my son has Optics unit in school and request help from me. I am not so educated so I come here and ask you to please help me so my son can have good marks. Below I copy paste questions

Label the terms in the diagram.
\f1 F - principal focus F' - secondary principal focus optical centre 2F F. DE' 2F' 2F' 2F F

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