9. Describes refraction of light when the PHA during the two middle stumps naroi does.10. Describes finding places The size and type of images caused by Lane in sabang by writing and calculating.
9. Describe the refraction of light on a stump Reversible middle position between the two types 10. Describe the position detection The size and type of images from some lenses. Either by writing and calculating.
9. Explain refraction when were Roy stubs between intermediaries two kinds 10 describes finding a suspect, the size and the image caused by the เลนส some. The drawing and calculating .