A lens of focal length 20cm

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Thus, the object is at a distance of 60 cm from the concave lens, and the negative sign implies that it is on the left side of it. Menu Categories. A concave lens of 20 cm focal length forms an image 15 cm from the lens. Compute the object distance. Tutorialspoint Simply Easy Learning.

A lens of focal length 20cm

Thus, the object is at a distance of 60 cm from the concave lens, and the negative sign implies that it is on the left side of it. Menu Categories. A concave lens has a focal length of 20 cm. At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens? Also calculate the size of the image formed. Tutorialspoint Simply Easy Learning. Updated on: Oct Related Articles A concave lens has focal length 15 cm. At what distance should the object from the lens be placed so that it forms an image at 10 cm from the lens? Also find the magnification produced by the lens.

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A convex lens of focal length 30 cm produces 5 times magnified real image of an object. What is the object distance? A convex lens of focal length f will form a magnified real image of an object if the object is placed. A convex lens of focal length f produces a virtual image n times the size of the object. Then the distance of the object from the lens is. How far from a convex lens of focal length 20 cm would you place an object to get a real image enlarged three times? A convex lens of focal length f produces a real image m times the size of an object, then the distance of the object from the lens is.

A point object is placed at a distance of 18 cm from a convex lens on its principal axis. Its image is formed on the other side of the lens at 27 cm. Calculate the focal length of the lens. Use app Login. A convex lens has focal length 20 cm.

A lens of focal length 20cm

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An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find :. A concave lens forms an erect image of 1 3 rd size of the object which is placed at a distance 30 cm in front of the lens.

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