Question

Q17) The discovery that neutrinos switch between different "flavours" has won the 2015 Nobel Prize in physics. ‘Neutrino Oscillations’ is-

• A. The movement of neutrinos in a back-and-forth motion, a pendulum-like manner through space while travelling
• B. The flipping of neutrinos from one type to another during flight
• C. The flipping of a neutrino from electron to proton and/or vice versa in any atom
• D. None of the above

Answer 1

The correct option is B

The flipping of neutrinos from one type to another during flight

Ans:17)(b)Neutrinos are ubiquitous subatomic particles with almost no mass and which rarely interact with anything else, making them very difficult to study.Takaaki Kajita and Arthur McDonald led two teams which made key observations of the particles inside big underground instruments in Japan and Canada.

Extra Information

About Neutrino:-

Second most abundant particle in the Universe, after photons of light.

Means 'small neutral one' in Italian; was first proposed by Wolfgang Pauli in 1930.

Uncharged, and created in nuclear reactions and some radioactive decay chains.

Shown to have a tiny mass, but hardly interacts with other particles of matter.

Comes in three flavours, or types, referred to as muon, tau and electron.

These flavours are able to oscillate - flip from one type to another - during flight.