Saved Bookmarks
| 1. |
2 A student determines the focal length of a device X, by focussing the image of a far off object onthe screen positioned as shown in the figure below.[ ]XoThe device X is.a) Concave lensb) Concave mirrorc) Convex lensd) Convex mirrorof a box and emerges out |
|
Answer» ong>Answer: |
|