Question

how far from the lens should you hold the print to see a final virtual image 30 cm from the lens (at the eye's near point)?

Answer 1

m= near point/ s.

s=4.28 cm ( the distance of the contract from the magnifying glasses)

Near point = 30cm

so m= 30/4.28= 7

Thus, far from the lens should you hold the print to see a final virtual image 30 cm from the lens (at the eye's near point) is 7