The objective of a telescope has a focal length of 200 cm and its eyepiece has a focal length of 1.0 cm. What is the magnification of this telescope when viewing an object at infinity? A) 20 B) 0.0050 C) 200 D) none of the given answers
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Step 1: The magnification of a telescope is given by the formula: magnification = - (focal length of objective) / (focal length of eyepiece) Show more…
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An astronomical telescope has a magnifying power 10. The focal length of eyepiece is 20 cm. The focal length of objective is (a) 2 cm (b) 200 cm (c) 1/2 cm (d) 1/200 cm
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The magnifying power of an astronomical telescope is 10 and the focal length of its eye-piece is $20 \mathrm{~cm}$. The focal length of its objective will be (a) $200 \mathrm{~cm}$ (b) $2 \mathrm{~cm}$ (c) $0.5 \mathrm{~cm}$ (d) $0.5 \times 10^{-2} \mathrm{~cm}$
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Round 1
Telescope A telescope consisting of a +3.0-cm objective lens and a +0.60-cm eyepiece is used to view an object that is 20 m from the objective lens. (a) What must be the distance between the objective lens and eyepiece to produce a final virtual image 100 cm to the left of the eyepiece? (b) What is the total angular magnification?
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