- Q 137 Two Lenses L And L Are Used To Make A Telescope The Larger Lens L Is A Convex Lens With Both Surfaces Having 1 (34.75 KiB) Viewed 55 times
Q. 137: Two lenses L₁ and L₂ are used to make a telescope. The larger lens L₁ is a convex lens with both surfaces having
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Q. 137: Two lenses L₁ and L₂ are used to make a telescope. The larger lens L₁ is a convex lens with both surfaces having
Q. 137: Two lenses L₁ and L₂ are used to make a telescope. The larger lens L₁ is a convex lens with both surfaces having radius of curvature equal to 0.5 m. The smaller lens L₂ has two surfaces with radius of curvature 4 cm. Both the lenses are made of glass having refractive index 1.5. The two lenses are mounted in a tube with separation between them equal to 1 cm less than the sum of their focal length. (a) Find the position of the image formed by such a telescope for an object at a distance of 100 m from the objective lens L₁. (b) What is the size of the image if object is 1 m high? Do you think that lateral magnification is a useful way to characterize a telescope?