Question

State the energy changes taking place in following cases- 1 Water freezes in the freezing chamber of a fridge
2 Exposure of photographic film in sunlight

Answer 1

1. When water freezes in the freezing chamber of a fridge, the kinetic energy of water molecules is released in the form of heat energy.
2. In case of exposure of photographic film in sunlight, the light energy changes into chemical energy.