Which of the following statements are true concerning signconventions for image formation?
Check all that apply.
a.A converging lens has a negative focal length; a diverginglens has a positive focal length.
b.For an upright image, the magnification is positive; for aninverted image, the magnification is negative.
c.A virtual image has a positive image distance; a real image has anegative image distance.
d.When the center of curvature of a spherical mirror is on the sameside as the reflected light, the radius of curvature is positive;otherwise, it is negative.
e.When the object is on the same side of the reflecting orrefracting surface as the incoming light, the object distance ispositive; otherwise, it is negative.
