A converging lens of focal length 20 cm forms an image, when an object – InterviewSolution

1.	A converging lens of focal length 20 cm forms an image, when an object is placed 15 cm away from it. Calculate how far (in cm) the image is, from the lens. Include the sign.-60
Answer» A converging lens of focal length $20 c m$ forms an image, when an object is placed $15 c m$ away from it. Calculate how far (in cm) the image is, from the lens. Include the sign. -60

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