An object is 30 cm in front of a converging lens with a focal length of 10 cm. F

Question

An object is 30 cm in front of a converging lens with a focal length of 10 cm. Find the image distance. Describe the nature of the image. What is the magnification of the image? The light from this first lens is now made to pass through a second converging lens with focal lenght 5 cm. The distance between the lenses is 10 cm. Find the final image produced by this set-up and describe its nature. Give ray sketches with your answers.

please, show your work and asnwer each questions accordingly..Thanks!

Explanation / Answer

For first lens

=> 1/v =   1/10 - 1/30

=> v = 15 cm

=>   image distance = 15 cm to right of lens

=> magnification =   - 15/30 =    - 0.5

=>    real image is formed

For second lens

=> 1/v = 1/5 - 1/5

=>   v = infinity

=>   the final image produced by this set-up   = at infinity

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