e ,
v = – 90 cm,
Magnitude of magnification = 90/9 = 10 Each square in the virtual image  has an area 10 × 10 × 1 mm2
= 100 mm2 = 1 cm2
(b)
Magnifying power = 25/9 = 2 8
(c)
No, magnification of an image by a lens and angular magnification
(or magnifying power) of an optical instrument are two separate
things