1. When the power is off, the room becomes dark and no object is visible.
2. When a lighted candle is put infront of the mirror, light falling from it on all objects are visible in the mirror.
3. The following questions are likely to arise in the mind of Sai.
a) Why are only some images of the objects in the room are visible in the mirror?
b) What relation exists between the light of the candle and mirror exists?
c) Why not the images of all objects seen in the mirror.
d) What is important for the visibility of the objects?