: What speed is 3×10⁸?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
3×10⁸ meters per second (300,000,000 m/s or 300,000 km/s) is the speed of light in a vacuum, denoted by the symbol 'c'. This is the fastest speed possible in the universe according to Einstein's theory of relativity. Light travels this distance every second, which means it could circle Earth's equator about 7.5 times in just one second. This constant appears in Einstein's famous equation E=mc².
Suggested Q&A
General · Class 12- GeneralClass 12Electric Field at Centre of Ring with Non-Uniform Charge Distribution. Four quadrants carry linear charge densities: +2λ, −2λ, +λ, −λ. Find electric field at centre.
- GeneralClass 12P°(hexane) = 408 Torr, P°(heptane) = 141 Torr. x(hexane) = 0.300. Find Y₆ and Y₇.
- GeneralClass 122N₂O₅(g) → 4NO₂(g) + O₂(g). Initial P = 50 mmHg; P at 30 min = 87.5 mmHg. Find P at 60 min.
- GeneralClass 12What is the difference between psychosis and neurosis?
- GeneralClass 12What is the difference between prism and a pyramid?
- GeneralClass 12What is the difference between phrase and clause?