SSC CGL 2023 PYQ — Question 118

SSC CGL Tier II - 2 March 2023 - Shift 1 • General Awareness • Q118

In which year did Albert Einstein predict a new state of matter, the Bose-Einstein condensate (BEC), based on a quantum formulation by the Indian physicist Satyendra Nath Bose?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. 1924

  • In 1924 Albert Einstein predicted a new state of matter, the Bose-Einstein condensate (BEC), based on a quantum formulation by the Indian physicist Satyendra Nath Bose.
  • Bose Einstein condensate (BEC), a defined as a state of matter, in which separate subatomic particles or atoms, cooled to
    approximately absolute zero (0 K, - 459.67°F or - 273.15 °C; K = kelvin), coalesce into an entity of single quantum mechanical. It means one can be defined by a wave function- on a near-macroscopic scale.

  • Although it had been predicted for decades, the first atomic BEC was made only in 1995, when Eric Cornell and Carl Wieman of JILA, a research institution jointly operated by the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder, cooled a gas of rubidium atoms to 1.7 × 10−7 K above absolute zero.

  • Along with Wolfgang Ketterle of the Massachusetts Institute of Technology (MIT), who created a BEC with sodium atoms, these researchers received the 2001 Nobel Prize for Physics.

  • Research on BECs has expanded the understanding of quantum physics and has led to the discovery of new physical effects.