Question

How can technological advancements fulfil increasing demand for energy sources? Give
examples to substantiate your answer.

Answer 1

• Solar Photovoltaics (PV) converts sunlight into electricity.

• Sun is the greatest source of unlimited energy

• Especially, in the tropical zone, it can be tapped to get the maximum output.

• It is used for a number of purposes such as solar cookers, solar geysers, solar cars, solar  dryers, solar lanterns, solar street lighting system, solar air conditioner, etc.

Examples: -

• In the areas of high wind velocity, the wind is used to generate energy.

• Coastal areas are ideal for it.

• Wind energy is mainly used for pumping water, grinding grains, sailing and electricity  generation.