You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing shows, a plane mirror reflects light from the bird into your camera. The bird is 2.1 m from the mirror. From the camera, the mirror is x=4.5 m and the bird is y=4.6 m from x but 2.4 from y. For what distance must you set the focus of the camera lens in order to snap a sharp picture of the bird's image?
2007-03-13 15:44:09 · 4 answers · asked by layc_510 2 in Science & Mathematics ➔ Physics
I included all of the information needed. The drawing isn't needed.
2007-03-13 15:53:21 · update #1
set the camera on auto, lol
2007-03-13 15:50:59 · answer #1 · answered by digital tech 2 · 0⤊ 2⤋
You don't need the direct distance from the camera to the bird. You need the distance of the line of sight which reflects off the mirror. That distance is the
Distance from the camera to the mirror +
Distance from mirror to bird
= 4.5 + 2.1 = 6.6 m
2007-03-14 15:59:11 · answer #2 · answered by Northstar 7 · 0⤊ 1⤋
There is no picture provided. However, you need to figure out the distance the light travels from the bird to the camera. This would be bird-mirror plus mirror-camera.
2007-03-13 15:49:50 · answer #3 · answered by gaurav19671031 2 · 0⤊ 2⤋
oiiiiiiiii (O)(O)
WW
2007-03-13 15:53:22 · answer #4 · answered by mauad m 1 · 0⤊ 2⤋