Question

A 1.5 cm tall candle flame is placed perpendicular to the principal axis of a concave mirror of focal length 12 cm. If the distance of the flame from the pole of the mirror is 18 cm, use the mirror formula to determine the position and size of the image formed.

Answer 1

Using the mirror formula, we found that the image distance is $v = -36 \, \text{cm}$. This means the image is real, inverted, and located 36 cm in front of the concave mirror. Using the magnification formula, the height of the image was calculated to be $h_i = -3.0 \, \text{cm}$, which confirms that the image is inverted and magnified.