Practice Summary (6.5) - Optics

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10 questions

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6 sample questions

Question 1.
Define reflection in your own words.
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Think about how a mirror works.
Question 2.
What is a lens?
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Consider what you look through in glasses.
3Question 3.
What is the law of reflection?
- The angle of incidence equals the angle of refraction.
- The angle of incidence is equal to the angle of reflection.
- The angle of refraction is greater than the angle of incidence.
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Think about how light behaves when it hits a mirror.
4Question 4.
Is a convex lens diverging?
- True
- False
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Recall the effect of convex lenses on light.
Question 5.
A light ray is incident at an angle of 40° from air to glass (n=1.5). Calculate the angle of refraction.
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Set up Snell's Law correctly.
Question 6.
A concave mirror has a focal length of 10 cm. Determine the image distance if the object is placed 15 cm in front of the mirror.
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Use the correct sign convention for distances.

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