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give two uses of each concave and convex mirror list two uses each of concave and convex mirrors write two uses each of concave lens and convex mirror give two uses of concave and convex mirror give two uses of concave and convex mirror class 7 two uses of each concave and convex mirror give uses of each concave and convex mirror give one use each of a concave and convex mirror give three uses of each concave and convex mirror write two uses of concave and convex mirror
