A candle of height 10 cm is kept 5 cm away from a plane mirror. The height of the image is ___ cm.
A plane mirror forms an image which has the same size as the object. Therefore, the size of image will also be 10 cm.
A candle flame 1.6 cm high is imaged in a ball bearing of diameter 0.4 cm. If the ball bearing is 20 cm away from the flame, find the location and the height of the image.