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An object is located 1.5 m  from a 6.5-D lens. a) By how much does the...

An object is located 1.5 m  from a 6.5-D lens. a) By how much does the image move if the object is moved 0.9 m closer to the lens? Follow the sign conventions. b) By how much does the image move if the object is moved 0.9 m farther from the lens? Follow the sign conventions.

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