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Card 26

Front

What is a converging lens?

Back

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Card 27

Front

What is the principle axis?

Back

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Card 28

Front

What is the focus?

Back

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Card 29

Front

What is the focal lenght?

Back

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Card 30

Front

How can you compare lenses by simply looking at them?

Back

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Card 31

Front

How do you estimate the focal length of a converging lens?

Back

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Card 32

Front

What sort of lenses have a greater power?

Back

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Card 33

Front

What is power measured in?

Back

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Card 34

Front

What is the formula for the power of ta lens?

Back

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Card 35

Front

What is light like when it reaches a lens from a very distant point?

Back

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