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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
- Two bullets are fired simultaneously, horizontally and with different speeds
- The order of the electric field near the earth’s surface is
- A radiation of energy ‘E’ falls normally on a perfectly reflecting surface
- If the red light is replaced by blue light illuminating the object in a microscope
- The threshold wavelength for photoelectric effect of a metal is 6500 Å. The work function
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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