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The upper and lower portions in common type of bi-focal lenses are respectively?

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The upper and lower portions in common type of bi-focal lenses are respectively?

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The upper and lower portions in common type of bi-focal lenses are respectively? A. Both concave of different focal length B. Both convex of ifferent focal length C. Concave and Convex D. Convex and Concave Check Answer Complaint Here As Incorrect Question / Answer

Related Questions The type of glass used in making lenses and prisms is A. jena glass B. soft glass C. pyrex glass D. flint glass Check Answer Complaint Here As Incorrect Question / Answer All nodes are connected to a common medium and commonly used in the original Ethernet. What type of "Networking" is this? A. Bus network B. Star network C. Mesh network D. Ring network Check Answer Complaint Here As Incorrect Question / Answer In India, rural incomes are generally lower than the urban incomes, which of the following reasons account for this? A large number of farmers are illiterate and know little about scientific agriculture Prices of primary products are lower than those of manufactured products Investment in agriculture has been low when compared to investment in industry A. II, III B. I, III C. I, II D. I, II, III Check Answer Complaint Here As Incorrect Question / Answer The focal length of convex lens is A. the same for all the colours B. shorter for blue light than for red C. shorter for red light than for blue D. maximum for yellow light Check Answer Complaint Here As Incorrect Question / Answer The focal length of the lens of a normal human eye is about A. 25cm B. 1m C. 2.5min D. 2.5cm Check Answer Complaint Here As Incorrect Question / Answer

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