A convex lens has

According to the question;

Object distance = u;

Image distance (v) = 20cm;

Focal length = 10cm

By lens formula;

⇒ u = -20cm.

Therefore, object is placed at 20 cm in front of lens.

Now;

Height of object h₁= 2cm;

Magnification = =

Putting values of v and u

Magnification =

⇒

⇒

Height of image is 2 cm.

Negative sign means image is inverted.

Thus, the image is real, inverted and same as size of object.

Diagram below shows the image formation.