Two positive thin lenses are separated by a distance of 5.0 cm. The focal length of the lenses are: F1 = 10.0 cm and F2 = 20.0 cm. Using ray tracking along with numerical methods, determine the power of the combination in 1/cm.

Then,

2) What is the back focal distance of the two lenses as described above, in cm?

3) What is the front focal distance of the two lens system as described above, in cm?

4) What is the location of the front principle plane of the two lens system described above, in cm?

If the front principle plane is to the left of the first lens (before the lens), answer will be entered as (-); if it is to the right of the first lens (after the lens), then it will be (+).

5) What is the location of the back principle plane, measured relative to the first lens again, in cm?

Similar, if the back principle plane is to the left of the first lens, answer will be entered as (-); if it is to the right of the first lens, it will be entered as (+).

6) If an object is placed 2.0 cm to the left of the front focal point, where is the image located relative to the back focal point?

Thank you!