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The total energy of electron in the ground state of hydrogen atom is -13.6 eV. The kinetic energy of an electron in the first excited state is
Options
(a) 6.8 eV
(b) 13.6 eV
(c) 1.7 eV
(d) 3.4 eV
Correct Answer:
3.4 eV
Explanation:
Energy in the first excited state
= – 13.6 / n² = – 13.6 / 2² = – 3.4 eV
But K.E. = – (Total energy) = +3.4 eV.
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Topics: Atoms and Nuclei
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The ‘rad’ is the correct unit used to report the measurement of
- The equivalent resistance of two resistors connected in series is 6 Ω
- A thermocouple of negligible resistance produces an e.m.f. of 40 µV/⁰C in the linear range
- The equation of state for 5 g of oxygen at a pressure P and temperature T,
- An electric dipole of dipole moment p is placed in a uniform external electric field
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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