Here’s How to Crack It
- With so = 48 cm and f = −24 cm, the lens equation gives us:
The image is 16 cm from the lens, on the same side as the
object.
- Because si is negative, the image is virtual.
- Virtual images are upright.
- The magnification is
(The fact that the magnification is positive confirms that the
image is upright.) The height of the image is
hi = |m| • ho = (9 cm) = 3 cm
These results are illustrated in Question 25.