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06-04-2024
Physics

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A convex lens of focal length 15 cm is placed coaxially in front of a convex mirror.when an object is placed on the axis at a distance of 20 cm from the lens,it is found that the image coincides with the object.calculate the radius of curvature of the mirror-(consider all optical event)
A. 45
B. 65
C. 55
D. 85

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