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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 identical capacitors each of capacitance 5 mF are charged potentials 2 kV and 1 kV
- A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed
- A block of mass 0.50 kg is moving with a speed of 2.00 ms⁻¹ on a smooth surface.
- An engine pumps water continuously through a hose. Water leaves the hose
- A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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