Vignan Sammelan 2021 online quiz

Laser light is characterized by coherence, meaning the light waves are in phase with each other in both time and space. Refraction and reflection are general properties of light, not specific to lasers.

DVD originally stood for Digital Video Disc, but the industry later adopted Digital Versatile Disc to reflect its broader data storage capabilities.

Nitrocellulose is the primary film-forming agent in nail polish that provides the hard, shiny coating once the solvent evaporates.

Chandrayaan-2 was launched by the Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III), now known as LVM3.

The neocortex is the part of the mammalian brain involved in higher-order brain functions such as sensory perception, cognition, generation of motor commands, spatial reasoning, and language, which are essential for imagination.

High-energy visible (HEV) light, commonly known as blue light, has been shown to potentially contribute to skin aging and damage when exposure is prolonged.

VSNL (Videsh Sanchar Nigam Limited) launched public internet access in India on August 15, 1995.

PARAM 8000, developed by C-DAC in 1991, is widely recognized as India's first supercomputer.

SSLV stands for Small Satellite Launch Vehicle, which is ISRO's launch vehicle designed to launch small satellites into low Earth orbit.

SpaceX became the first private company to send astronauts to the International Space Station with the Demo-2 mission in 2020.

Singapore was among the first countries to develop and deploy an antibody test for COVID-19 in early 2020 to identify past infections.

China's Chang'e 4 mission achieved the first soft landing on the far side of the moon in January 2019.

While the human eye does not function like a digital camera, estimates based on the density of photoreceptors suggest a resolution equivalent to approximately 576 megapixels.

Sir C.V. Raman was awarded the Nobel Prize in Physics in 1930 for his work on the scattering of light, a phenomenon now known as the Raman Effect.

National Science Day is celebrated on February 28 to mark the discovery of the Raman Effect by Sir C.V. Raman in 1928.

The first National Science Day in India was celebrated on February 28, 1987.

Silicon is a semiconductor material that serves as the primary base for manufacturing integrated circuits and microchips.

Sir C.V. Raman was awarded the Nobel Prize in Physics in 1930 for his discovery of the Raman Effect.

The theme for National Science Day 2021 was 'Future of STI: Impacts on Education, Skills and Work'.