NCERT Solutions for Class 10 Physics Chapter 5 Sources of Energy


Energy is derived from several sources. These sources are classified as: Renewable Sources and Non-renewable Sources. Renewable energy is the one that is derived from natural sources such as sun, wind, water, etc. and can be replenished. The energy derived from these natural sources can be converted into various forms of energy such as solar energy, which is widely used in solar cookers, solar panels to generate electricity, solar batteries etc., wind energy used in windmills. Non-renewable energy is obtained from natural resources that once exhausted, cannot be replenished. Coal, oil and natural gas are the sources of non-renewable energy. These are widely used in today’s scenario. However, they are less eco-friendly when compared to renewable resources as they produce a lot of environmental pollution when burnt.

These sources of energy have several advantages and disadvantages. Therefore, they should be used wisely. The non-renewable sources are on the verge of getting exhausted. Alternative sources of energy are being searched, which can be used in an environment-friendly manner without being depleted.