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J.J. Thomson's cathode-ray tube experime...

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 e/m of electrons is much greater than the e/m of protons

D

the e/m ratio of the cathode ray particles changes when a different gas is placed in the discharge tube

Text Solution

Verified by Experts

The correct Answer is:
C
`(e/m)_"electron" gt gt (e/m)_"proton"`
`[because (e/m)_"proton" =1/1837(e/m)_"electron"]`
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