A - larger than the object
B - smaller than the object
C - located in front of the lens
2006-11-09 06:32:16 · 2 answers · asked by Basia 1 in Science & Mathematics ➔ Physics
b
2006-11-09 06:49:32 · answer #1 · answered by Treat 2 · 0⤊ 0⤋
Your question seems weird. I'll try to help in whatever way i can.
First, the length of the lens doesnt play a big part. Yes they may alter the focal length of a converging lens, but the focal length is still what you should be looking out for. It won't change cos the lens will not lengthen or fatten itself.
A virtual image is one where the image is actually formed behind the object, like in the case of a magnifying glass. This happens ONLY when the object is placed at a distance SHORTER than the focal length from the vertical.
You may want to draw a ray diagram to illustrate this.
Hope this helps=)
2006-11-09 06:46:59 · answer #2 · answered by luv_phy 3 · 0⤊ 0⤋