Give some uses and advantages of solar energy.
- For cooking food in a solar cooker.
- For heating water in solar geysers.
- For generating electricity in space satellites, calculators, watches, etc., by solar cells.
- For generating electricity on a large scale by a solar power plant.
- To melt metals in solar furnaces.
- It does not cause any pollution.
- It is a renewable source of energy.
- It is free of cost.