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A telescope has an angular magnification of 250 when used with a 20 mm eyepiece.What is the focal length of the objective lens?
Offeror
In contract law, the person who makes the offer.
Counteroffer
A response to an offer in which the original conditions are rejected and replaced with new terms by the party receiving the initial offer.
Electric Bicycle
A bicycle equipped with an electric motor that can assist with pedaling and, in some models, completely take over propulsion.
Extra Tire
A spare tire carried in a vehicle for use in the event of a tire failure.
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