The objective lens of an astronomical telescope forms an image of a distant object at the focal point of the eyepiece, which has a focal length of +1.5 cm. If the two lenses are 80.0 cm apart, what is the angular magnification?
A. –54.
B. –52.
C. –17.
D. –4.8.
Answer:B
The objective lens of an astronomical telescope forms an image of a distant object at the focal point of the eyepiece, which has a focal length of +1.5 cm. If the two lenses are 80.0 cm apart, what is the angular magnification?
A. –54. B. –52. C. –17. D. –4.8.