Physics need work checked

posted by .

Physics lenses. Please help, my math is wrong and I need second opinion.?
Consider three lenses with focal lengths of 25.9 cm, -15.8 cm, and 10.0 cm positioned on the x axis at x1 = 0 m, x2 = 0.412 m, and x3 = 0.514 m, respectively. An object is at d = -121 cm.
Find the location of the final image produced by this lens system. x=___m
Find the magnification of the final image produced by this lens system. m =____
work is here
imgur. com/ned2q

  • Physics need work checked -

    The first lens
    do = 121, f1 = 25.9
    1/di + 1/do =1/f1,
    di = 32.9 cm
    It is the image for the second lens. It is 41.2 – 32.9 = 8.25 cm far from the second lens.
    do=8.25, f2 =15.8
    1/do -1/di =-1/f2.
    di =13.2 cm.
    Again this would work as image for the 3rd lens.
    It is 51.2 -13.2 = 28cm from the origin of the coordinate system and distance 51.4 – 28 = 23.4 cm from the 3rd lens.
    do =23.4, f3 = 10
    1/di + 1/do = 1/f3
    di =17.5.
    The final image is 17.5 + 51.4 =68.9 cm from the origin of the coordinate system.

    M = di/do, and M =M1•M2 •M3=
    =(32.9/121) •(13.2/8.25) •(17.5/23.4) =0.325.

  • Physics need work checked -

    If you know the answer, show it. please

  • Physics need work checked -

    How much work is required to lift a 5.1-kg concrete block to a height of 3.6 m

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    Two converging lenses are placed 31.0 cm apart. The focal length of the lens on the right is 22.0 cm, and the focal length of the lens on the left is 15.0 cm. An object is placed to the left of the 15.0 cm focal-length lens. A final …
  2. Physics

    Two converging lenses with focal lengths 5 cm and 30 cm are placed 35 cm apart. Rays from a very distant object are impinged on the lens system parallel to the principal axis. What is the refractive power of the combination of these …
  3. Physics

    Two lenses are in contact. One of the lenses has a focal length of +10.0cm when used alone. When the two are in combination, an object 20cm away from the lenses forms a real image 40cm away from the lenses. What is the focal length?
  4. Physics

    Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses …
  5. physics

    Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses …
  6. physics

    Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses …
  7. physics

    Telephoto lenses allow one to "zoom in" on distant objects, making them bigger. A particular telephoto lens consists of a combination of two thin lenses having focal lengths of f1=20 cm and f2=−8 cm, respectively. The lenses …
  8. Physics

    Two plus lenses have focal lengths in the ratio 3:1. When placed together in close contact the focal length of the combination is +8.33cm. What are the focal lengths of the two lenses?
  9. physics

    Two plus lenses have focal lengths in the ratio 7:1. When placed together in close contact the focal length of the combination is +12.5cm. What are the focal lengths of the two lenses?
  10. Physics, ray optics

    An astronomical telescope of magnifying power 7, consist of two thin lenses 40 cm apart in normal adjustment. Find the focal length of the lenses.

More Similar Questions