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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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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Calculate the focal length of a reading glass of a person, if the distance
- Water rises to a height h in capillary tube. If the length of capillary tube above
- Pure Si at 300 k has equal electrons (nₑ) and hole (nh) concentrations
- A capacitor of 10 µF charged upto 250 volt is connected in parallel with another
- If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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