Define magnification.what is positive,negative magnification
Answers
ANSWER
Magnification is the ratio of height of the image(h') to the height of
the object(h).
It is also equal to negative of the ratio of the image distance(v)
to object distance(u).
m = hh′=−uv
A negative magnification indicates that the image is inverted. If the object is placed closer to a converging lens than the focal length, the rays on the far side of the lens diverge.
A magnification of 1 (plus or minus) means that the image is the same size as the object. If the magnification is positive, the image is upright compared to the object; if m is negative, the image is inverted compared to the object.
Answer:
If the magnification is positive, the image is upright compared to the object; if m is negative, the image is inverted compared to the object
A magnification of 1 (plus or minus) means that the image is the same size as the object. ... If the magnification is positive, the image is upright compared to the object; if m is negative, the image is inverted compared to the object
A negative magnification indicates that the image is inverted. If the object is placed closer to a converging lens than the focal length, the rays on the far side of the lens diverge. ... The virtual image is upright and the magnification is positive in this case.