Question

An object 3 cm high is placed 15cm infront of a convex mirror of focal length 20 cm. Find the position and nature of the image. Draw the ray diagram for the same.
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Answer 1

Measure distance BC. It will be found to be equal to 6 cm. Thus, object is placed at a distance of 6 cm × 5 = 30 cm from the lens. A concave lens of focal length 15 cm forms an image 10 cm from the lens.

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