Question

the object distance of a lens is 30 centimetre and image distance is 10 cm find the magnification of the lens with the help of this decide whether the size of the image is smaller or bigger than the size of the object​

Answer 1

Answer:

m = v/u

   = 10/30

   = +1/3

Since magnification is m < 1, the image is smaller than size of the object.