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Which of the following is an example of a renewable energy source?
Coal
Petroleum
Solar energy
Natural gas
Solar energy
Solar energy is an example of a renewable energy source because it is continuously replenished by natural processes and is inexhaustible on a human timescale. In contrast, coal, petroleum, and natural gas are finite fossil fuels formed over millions of years.
Solar energy is an example of a renewable energy source because it is continuously replenished by natural processes and is inexhaustible on a human timescale. In contrast, coal, petroleum, and natural gas are finite fossil fuels formed over millions of years.
Think of solar energy like water flowing from a natural, endless spring that replenishes itself daily, while fossil fuels are like water stored in a fixed, sealed tank that will eventually run out.
SOLAR: Sustainable Outstanding Light And Radiation
41HтЖТ4He+2e++2╬╜eтАЛ+Energy тАФ Nuclear fusion reaction powering the sun
E=h╬╜ тАФ Energy of a photon absorbed by solar cells
Energy from the sun is generated through nuclear fusion in its core, where hydrogen atoms fuse to form helium and release massive amounts of electromagnetic radiation. Photovoltaic (PV) cells absorb this solar radiation and convert photons directly into electrical energy via the photoelectric effect.
Renewable energy sources replenish naturally within a short span of time and produce minimal greenhouse gases.
Coal, petroleum, and natural gas are non-renewable fossil fuels formed from the decayed remains of prehistoric plants and animals.
Solar power is intermittent and depends heavily on weather conditions and geographical location.
Abundant and inexhaustible supply
Eco-friendly with zero direct carbon emissions during electricity generation
Low ongoing maintenance costs for photovoltaic systems
High initial setup and installation cost
Intermittent power generation dependent on sunlight availability
Solar photovoltaic (PV) power plants and rooftop panels
Solar water heaters for residential and industrial use
Solar cookers and solar street lighting systems
Coal and petroleum are primary sources of thermal power and transportation fuel but contribute significantly to global carbon emissions.
Options A, B, and D are non-renewable resources because their replenishment takes hundreds of millions of years.
C is correct тАФ Solar energy is a renewable energy source that is naturally replenished and inexhaustible.
In competitive exams like RRB JE, always differentiate between conventional (exhaustible/fossil) and non-conventional (renewable/inexhaustible) sources of energy.
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