Question

which rule do we have to fallow while finding magnification ?​

Answer 1

Answer:

Answer: If the magnification is greater than one, the image is larger than the object, but if the magnification is smaller than one the image is smaller than the object. For example, if the magnification is one half, then the image appears to be half the size of the object.

Answer 2

Answer:

m=I/O = -v/u

note it down