Answer to Question #250873 in Physics for Paulo Kunjo

Question

Question 1: Mirrors and Lenses

a) Suppose a concave meniscus lens is made from glass with n=1.50, with a focal length of -50.0cm and the radius of curvature of the concave surface is 30.0cm.

i. What is the radius of curvature of the convex surface? Is this a diverging lens or a converging lens?

ii. If I were to use the same lens to magnify a small insect using the same focal length to form a virtual image, that is, 45.0cm in front of the lens; where should the small insect be

placed?

b) How far apart are an object and an image formed by a 75.0cm focal length converging lens if

the image is 2.5x larger than the object and is real.

Answer 1

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