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An object is standing in front of a convex mirror. The image is reflected 3 feet behind the mirror which has a focal length of 16 feet. The image is 6 ft tall. How tall is the object? Express your answer with at least two decimal places, Note: When entering your final answer in the input box, include the sign if the answer involves a negative sign e.g. - 14.22. If positive, there's no need to include the sign
George, who stands 4 feet tall, finds himself 14 feet in front of a convex lens and he sees his image reflected 10 feet behind the lens. What is the focal length of the lens?
A 10-cm high object is placed 3 cm from a 9 -сm focal length diverging lens. Determine the image height.