Question

WHAT IS NUTRINO .WHY LIGHT TRAVEL 300000KM /S .DOES LIGHT HAS MASS.

Answer 1

1. WHAT IS NUTRINO not it is    Neutrino    

A neutrino is a fermion that interacts only via the weak subatomic force and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small  that it was long thought to be zero. The mass of the neutrino is much smaller than that of the other known elementary particles.

2.  WHY LIGHT TRAVEL 300000KM /h

light  travel at the speed of  300000km/h because  it is not exact speed of light  is  299,792,458 metres per second.  it vale is find out by  equation

E = M$C^{2}$

3 . light  doesnot have mass . i.e particles of light is photon which doesnot have mass

PLZ MARK AS THE BRILLAINT  ANSWER ..............................