What are the advantages and limitations of Li-FI over Wi-Fi? While throwing light on its functioning, discuss the main challenges in conversion of existing devices into Li-Fi enabled ones.

Li-Fi uses LEDs and ‘visible’ light to transmit data wirelessly as an alternative to short-range radio. It does not require any special LED bulbs but only standard LED bulbs which are used in houses and offices. Though Li-Fi is a ..

What is the R21/Matrix-M vaccine? How does it compare to the RTS,S/AS01 vaccine that was approved by WHO in 2021?

R21/Matrix-M is a vaccine against malaria, developed by the University of Oxford in the UK. The vaccine showed an efficacy of 77% in phase 1 and phase 2 trials. The vaccine showed a high efficacy of 80% as a result ..

What are some of the key features of the Vande Bharat 2.0 train? How would it improve India’s railways?

  The Integral Coach Factory (ICF) at Perambur, Chennai, planned and produced the Train18, subsequently known as the Vande Bharat Express, over the course of 18 months as part of the Indian government’s Make in India programme. This train’s second ..

What is a superconductor material? What are the benefits of superconductors?

A�superconductor�is a material that can conduct electricity or transport electrons from one atom to another with no resistance. It was discovered by Dutch physicist�Heike Kamerlingh Onnes�on April�8, 1911. Features of a superconductor: No heat, sound or any other form of ..

Critically examine various constraints in use of rooftop PVs in India in the light of recently scaled up targets of Jawaharlal Nehru National Solar Mission.

Rooftop Solar PV depend on sunlight, therefore, seasonal variation is a major constraint in it. Solar plate cells are made of silicon wafers and have high reflectance thus; reducing its efficiency.  Large patches of land are needed for spreading PV ..

Extraction of mineral resources from celestial bodies is a contentious issue at the international level. Discuss.

Currently, there is an absence of strong international law on outer space explorations. There are two international level agreements viz. Outer Space Treaty (1967) and Moon Agreement (1979). The Outer Space Treaty emphasises that no country can claim exclusive sovereignty ..

What is Artificial Intelligence (AI)? Discuss its various applications and scope for development in India.

It is a branch of computer science which deals with creating computers or machines as intelligent as human beings. The term was coined in 1956 by�John McCarthy. Applications: Health sector: Faster, cheaper and more accurate diagnosis and thus improving patient ..

What is Deep Tech? Examine case for an “India Strategic Fund”.

The government of India has been focusing on self-reliance in the field of military technology, semiconductors and science-based businesses. Deep Tech: Deep tech refers to those organisations which are involved in the field of technology solutions, engineering innovation, scientific advances, ..