J.J. Thomson’s cathode‐ray tube experiment demonstrated that
A
cathode rays are streams of negatively charged ions
B
all the mass of an atom is essentially in the nucleus
C
the 
of electrons is much greater than the 
of protons
of electrons is much greater than the of protons
D
the ratio of the cathode‐ray particles changes when a different gas is placed in the discharge tube
Text Solution
Verified by ExpertsThe correct answer is:
C
Thomson's cathode-ray tube experiment demonstrated the relation for 
of charged particles. The relation is
Thus, knowing 
and 
, the value of 
for electrons and for protons can be calculated. It is found the 
of electrons is much greater than the 
of protons.
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