WAEC - Physics (2016 - No. 31)
An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment
70.0
17.5
7.0
0.7
解释
Magnify power = \(\frac{f_o}{f_e}\)
= \(\frac{3.5 \times 100}{5.0}\)
= 70
= \(\frac{3.5 \times 100}{5.0}\)
= 70