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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
- Eight drops of a liquid of density ρ and each of radius a are falling through air
- In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
- Length of second pendulum is
- An unpolarised beam of intensity I is incident on a pair of nicols making an angle
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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