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Card 6

Front

What is principal focus?

Back

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Card 7

Front

What are non-axial rays?

Back

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Card 8

Front

What is the focal plane?

Back

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Card 9

Front

What does a converging lens do?

Back

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Card 10

Front

What is the focal length?

Back

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Card 11

Front

What does a ray diagram show?

Back

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Card 12

Front

What is a real image?

Back

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Card 13

Front

What is a virtual image?

Back

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Card 14

Front

What is the lens equation?

Back

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Card 15

Front

What is an astronomical refracting telescope made of?

Back

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