The total energy of an electron is \(3.555~\text{MeV}\). Its kinetic energy will be:
1. \(3.545~\text{MeV}\)
2. \(3.045~\text{MeV}\)
3. \(3.5~\text{MeV}\)
4. none of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not the property of cathode rays:
1. | it produces a heating effect. |
2. | it does not deflect in the electric field. |
3. | it casts a shadow. |
4. | it produces fluorescence. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | cathode rays are streams of negatively charged ions. |
2. | all the mass of an atom is essentially in the nucleus. |
3. | the \(\frac{e}{m}\) of electrons is much greater than the \(\frac{e}{m}\) of protons. |
4. | the \(\frac{e}{m}\) ratio of the cathode ray particles changes when a different gas is placed in the discharge tube. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology