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lyudmila [28]
3 years ago
11

An astronomical telescope has an objective of diameter 20 cm with a focal length of 180 cm. the telescope is used with an eyepie

ce of focal length 30 mm. what is the angular magnification of this telescope?
Physics
1 answer:
Bingel [31]3 years ago
8 0
By definition;
M = fo/fe

Where,
M = Angular magnification
fo = Focal length of objective lens
fe = Focal length of eyepiece lens

From the information given;
M = 180/30 = 6
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