What will the magnification be?
Wednesday, September 1st, 2010What will the magnification be?
What will the magnification be?
A stamp collector uses a magnifying glass w/ a focal length of 10 cm. In order to examine a rare postage stamp, he holds the lens 4.0 cm from his eyes. If the distance for the most comfortable viewing of the image is 30 cm from his eyes, how far from the lens must the postage stamp be placed? What will the magnification be?
u = object distance
m = magnification
Real is Positive sign convention.
1 / u - 1 / (30 - 4) = 1 / 10
u = 7.2 cm.
m = 26 / 7.2
= 3.6.
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