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An object is placed at a distance of 10 cm from a co-axial combination of two lenses A and B in contact. The combination forms a real image three times the size of the object. If lens B is concave with a focal length of 30 cm. The nature and focal length of lens A is
Options
(a) convex, 12 cm
(b) concave,12 cm
(c) convex, 6 cm
(d) convex, 18 cm
Correct Answer:
convex, 6 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
- The potential of a large liquid drop when eight liquid drops are combined is 20 V.
- Two blocks of masses m₁=4 kg and m₂= 2kg are connected to the ends of a string
- If the kinetic energy of the particle is increased to 16 times its previous value
- A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined
- An open knife edge of mass 200g is dropped from height 5m on a cardboard
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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