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If I Do I Die

 

Mnemonic Device:

  • If I Do I Die

Explanation: to remember the relationship between focal length and object & image distance, from a lens or mirror

  • 1/f = 1/do + 1/di
    • “f” is focal length
    • “do” is object distance
    • “di” is image distance
More Mnemonics for Physics

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