Practice Magnification (m) (6.2.1.6) - Optics

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6 sample questions

Question 1.
Define magnification in your own words.
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Think about comparing sizes.
Question 2.
What is the formula for magnification in a lens?
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Remember the definitions of v and u.
3Question 3.
What is the formula for magnification in a convex lens?
- m = v/h
- m = v/u
- m = h'/h
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Focus on the variables related to object and image.
4Question 4.
Magnification can be negative for mirrors. True or False?
- True
- False
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Think about how images are reflected in mirrors.
Question 5.
A telescope's objective lens has a focal length of 400 cm, and its eyepiece has a focal length of 10 cm. What is the total magnification of the telescope?
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Use the focal lengths of the lenses.
Question 6.
A converging lens is placed to focus on an object 15 cm away, which yields a clear image that is twice the size of the object. What is the image distance?
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Recall the image is twice the size of the object for magnification.

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