Cassegrain Formulas and Tips by Mike Lockwood
astronomical optics, part 3: the astronomical image
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CBSE Class 12-science Answered - topperlearning.com
A Galilean telescope measures 9 cm from the objective to the eye-piece. The focal length of the objective is 15 cm. Its magnifying power is A. $2.5$ B. $\\dfrac{2}{5}$ C. $\\dfrac{5}{3}$ D. $\\dfrac{3}{5}$
