The correct answer is Option 2 Explanation & Key Takeaways: • Statement i: True. In "Solar PV" (Photovoltaic) technology, solar radiation energy is directly converted into electrical energy using solar cells. • Statement ii: True. In "Solar thermal" technology, solar energy is absorbed and converted into heat, which can be used for applications like heating water, cooking, or generating electricity. • Statement iii: False. Biomass materials contain carbon, hydrogen, oxygen, and other elements such as nitrogen, sulfur, and trace metals, but not exclusively nitrogen. Related Concepts: • Solar PV Technology: This technology uses photovoltaic cells, often made of silicon, to directly convert sunlight into electricity. It is widely used in solar panels for residential and commercial energy production. • Solar Thermal Technology: This technology harnesses solar energy to generate heat, which can be used for various purposes, including water heating systems and concentrated solar power (CSP) plants that produce electricity. • Biomass: Biomass is organic material derived from plants and animals. It contains chemical energy stored from sunlight through photosynthesis. Biomass typically includes elements like carbon, hydrogen, oxygen, and small amounts of nitrogen and sulfur. • Differences Between Solar PV and Solar Thermal: • Solar PV converts sunlight directly into electricity using photovoltaic cells. • Solar thermal uses mirrors or collectors to concentrate sunlight and generate heat, which can then be used for power generation or other heating applications.