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The focal length of the objective of a terrestrial telescope is 80 cm and it is adjusted for parallel rays, then its power is 20. If the focal length of erecting lens is 20 cm, then full length of the telescope will be
Options
(a) 164 cm
(b) 124 cm
(c) 100 cm
(d) 84 cm
Correct Answer:
164 cm
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 1 µA beam of protons with a cross-sectional area of 0.5 sq.mm is moving with a velocity
- Three identical spherical shells, each of mass m and radius r are placed
- A block is moving up an inclined plane of inclination 60° with velocity of 20 ms⁻¹
- What is the wavelength of light for the least energetic photon emitted
- Radii of curvature of a converging lens are in the rato 1:2. Its focal length
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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