If a single lens forms a virtual image of an object, then
A) the lens must be a diverging lens.
B) the lens must be a converging lens.
C) the lens could be either a diverging or a converging lens.
D) the image must be inverted.
E) the object must be between the lens and its focal point.
Question 2
A student constructs an astronomical telescope and wishes it to have a magnification of 10. If the telescope has an objective lens of focal length 0.50 m, what must be the focal length of the eyepiece?
A) 2.5 cm
B) 5.0 cm
C) 10 cm
D) 25 cm
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