Question: When an object is located 40 cm to the left of a lens with a focal length f an image is produced at a distance

When an object is located 40 cm to the left of a lens with a focal length f an image is produced at a distance of L away from the lens. The lens is replaced with another lens having a focal length of 3f the image is now located at a distance of 2L from the lens.

(a) What is the distance L? Hint: Write out an equation for each case and try combining them.

(b) What is the focal length f?

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a The distance L10 in the 1st case the equation is 1401L1f in the second ... View full answer

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