Preknowledge

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Preknowledge



Multichoice Question

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Multichoice Question

 
What is answer best describes the phrase "Click and Drag"?
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Reflection

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Reflection


If you are uncomfortable with the concept of rays, you should try this question.


Multichoice Question

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Multichoice Question

 
Which one of the three diagrams below best represents a light ray?
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If you are uncomfortable with the concept of lenses, you should try this question before moving on.


Multichoice Question

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Multichoice Question

 
Which diagram below best represents a converging lens?
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