Q. No.As an electron makes a transition from an excited state to the ground state of a hydrogen-like atom/ion:
| 1. | its kinetic energy increases but potential energy and total energy decrease |
| 2. | kinetic energy, potential energy and total energy decrease |
| 3. | kinetic energy decreases, potential energy increases but total energy remains same |
| 4. | kinetic energy and total energy decrease but potential energy increases |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \({n}\left(\frac{{hqB}}{4 \pi {m}}\right) \)
2. \({n}\left(\frac{{hqB}}{\pi{m}}\right)\)
3. \({n}\left(\frac{{hqB}}{2 \pi {m}}\right)\)
4. \({n}\left(\frac{{hqB}}{8 \pi {m}}\right)\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(\(n=\) principal quantum number)
1. \({n}^{-5}\)
2. \({n}^{-4}\)
3. \({n}^{-3}\)
4. \({n}^{-2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(\frac{h^2}{\pi^2m^2r^3}\)
2. \(\frac{h^2}{4\pi^2m^2r^3}\)
3. \(\frac{h^2}{4\pi m^2r^3}\)
4. \(\frac{h^2}{8\pi^2m^2r^3}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(34~\text{eV}\)
2. \(20~\text{eV}\)
3. \(79~\text{eV}\)
4. \(109~\text{eV}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \( \lambda _B = 3\lambda _G\)
2. \( \lambda _B = 2\lambda _G\)
3. \( \lambda _B = 3\lambda _{G/3}\)
4. \( \lambda _B = 3\lambda _{G/2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA \(\mathrm{He}^+\) ion is in its first excited state. Its ionization energy is:
1. \(48.36~\text{eV}\)
2. \(13.60~\text{eV}\)
3. \(54.40~\text{eV}\)
4. \(6.04~\text{eV}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe recoil speed of a hydrogen atom after it emits a photon in going from \(n=5\) state to \(n =1\) state will be:
1. \(4.17\) m/s
2. \(2.19\) m/s
3. \(3.25\) m/s
4. \(4.34\) m/s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | All \(K,P\) and \(E\) increase |
| 2. | \(K\) decreases, \(P\) and \(E\) increase |
| 3. | \(P\) decreases, \(K\) and \(E\) increase |
| 4. | \(K\) increases, \(P\) and \(E\) decrease |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(1:1\)
2. \(1:2\)
3. \(4:1\)
4. \(2:1\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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