A
luminous point is moving at speed
Assuming
that the mirror is concave, with
|
Solution: Click For PDF Version Relation between the object distance, o, image distance, ,
and the radius of curvature, r,
for a spherical mirror is given by the equation
|
toward a spherical mirror, along
its axis. (a) We have
to show that the speed at which the image of this point object is
moving is given by
and that
,
we have to find the speed of the image (b)
if the object is far outside the focal point
;
(c) if it is close to the focal point
;
and (d) if
it is very close to the mirror
.
,
,
is the time derivative of the image distance
