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An 8.0x binocular has 3.0-cm-focal-length eyepieces. What is the focal length of the objective lenses? A Galilean telescope adjusted for a relaxed eye is 33.8

An 8.0x binocular has 3.0-cm-focal-length eyepieces. What is the focal length of the objective lenses?

A Galilean telescope adjusted for a relaxed eye is 33.8 cm long. If the objective lens has a focal length of 36.0 cm, what is the magnification?

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