77840 The thin lens equation is 11 -- - 1 ; where u is the object...

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77840 The thin lens equation is 11 -- - 1 ; where u is the object distance from the lens, v is the f image, image distance from the lens, and ƒ is the focal length (constant) of the lens. Suppose that a certain lens has a focal length of 6 cm and that an object is moving toward the lens at the rate of 2 cm/s. How fast is the image distance changing at the instant when the object is 10 cm from the lens ? [5] 77840 The thin lens equation is 11 -- - 1 ; where u is the object distance from the lens, v is the f image, image distance from the lens, and ƒ is the focal length (constant) of the lens. Suppose that a certain lens has a focal length of 6 cm and that an object is moving toward the lens at the rate of 2 cm/s. How fast is the image distance changing at the instant when the object is 10 cm from the lens ? [5]

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The speed at which the image distance is changing can be found by differentiating t... View the full answer