Question

Magnification produced by a lens is positive when the image is:

Options

• Erect

• Highly diminished

• Inverted

• Virtual and inverted

Answer 1

Magnification is positive for an erect image and negative for an inverted image. Since magnification is \[m=\frac{h_i}{h_o}\], a positive value means the image height has the same sign as the object height, i.e., the image is erect.