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NUMERICALS BASED ON CONVEX AND CONCAVE MIRROR, 1. An object 2 cm high is placed at a distance of 16 cm from a concave mirror,, , which produces 3 cm high inverted image. What is the focal length of the, mirror? Also, find the position of the image., 2. An erect image 3 times the size of the object is obtained with a concave, mirror of radius of curvature 36 cm. What is the position of the object?, 3. A 2.5 cm candle is placed 12 cm away from a convex mirror of focal length, 30 cm. Give the location of the image and the magnification., 4. An object is placed in front of a concave mirror of focal length 20 cm. The, image formed is 3 times the size of the object. Calculate two possible, distances of the object from the mirror., 5. A concave mirror produces 10 cm long image of an object of height of, 2 cm. What is the magnification produced?, 6. A converging mirror forms a real image of height 4 cm, of an object of height, 1 cm placed 20 cm away from the mirror. Calculate the image distance. What, is the focal length of the mirror?, 7.A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length, 15 cm. Give the location of the image and the magnification. Describe what, happens as the needle is moved farther from the mirror., 8. An arrow 2.5 cm high is placed at a distance of 25 cm from a diverging, mirror of focal length 20 cm., Find the nature, position and size of the image, formed., 9.The image formed by a convex mirror of focal length 20 cm is a quarter of, the object. What is the distance of the object from the mirror?, 10. When an object is placed at a distance of 60 cm from a convex mirror, the, magnification produced is 1/2. Where should the object be place to get a, magnification of 1/3?