Asked by Ebony Fraser

J.J Thompson discovered that cathode rays are:

A)emitted from the nucleus of an atom
b)a stream of charged atoms
c)a result of nuclear reactions
d)composed of tiny, negativley charged particles

Answers

Answered by Anonymous
I believe it is D.

I found this on a website:

"JJ Thompson discovered the electron by experiments that showed cathode rays had momentum. For an object to have momentum it must have a mass, so the cathode ‘rays’ must actually be a stream of particles, electrons."

Answered by drwls
Yes, the answer is (d)
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