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4 cards from this section. Quick, good the night before a test.
What type of lens is used to correct nearsightedness?
Think of the letters 'C' in Concave and 'C' in Closer to help.
What happens to light rays passing through a convex lens?
Remember the word 'converge' starts with 'C' for 'Convex'.
What type of lens is used to correct farsightedness?
Think about what convex lenses do.
True or False: Concave lenses bend light inward.
Consider the shape of a concave lens.
A person is nearsighted with a focal length of -30 cm. What type of lens is prescribed and why?
Remember how lenses work with focusing.
If a microscope has an objective lens with a focal length of 2 cm and an eyepiece with a focal length of 5 cm, what is the total magnification?
What variable affects magnification in microscope usage?
6 more questions in this section. Enroll free to practise them all.
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