A compound microscope is an instrument which consists of two lenses L1 and L2. The lens L1 called objective forms a real inverted and magnified image of the given object. This serves as the object for the second lens L2 the eye piece. The eye piece functions like a simple microscope or magnifier. It produces the final image which is inverted with respect to the original object, enlarged and virtual What is the value and sign of {according to the new cartesian sign convention} magnification of the image formed by L2?