AIPMT 2003 Physics and Chemistry Paper

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Question : 40 of 100

Marks: +1, -0

J.J. Thomson's cathode-ray tube experiment demonstrated that

cathode rays are streams of negatively charged ions
all the mass of an atom is essentially in the nucleus
the e/m of electrons is much greater than the e∕m of protons
the e/m ratio of the cathode ray particles changes when a different gas is placed in the discharge tube

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