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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
- When a radioactive substance emits an ∝ particle, its position in the periodic table
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
- Mass and diameter of a ring is 2 kg and 1 m respectively. The moment of inertia
- The temperature at which the vapour pressure of a liquid becomes equal to the external
- A p-n-p transistor is used in common emitter mode in an amplifier circuit.
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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