MCQ
Which theory explained that electrons revolved in circular orbits?
- AEinstein theory
- BBohr theory
- CRydberg theory
- DDe – Broglie theory
Explanation:
Niels Bohr explained the line spectrum of the hydrogen atom with the assumption that electrons revolved around an atom in circular orbits and that the orbit closer to the nucleus represented the ground state and the farther orbits represented the higher levels of energy.
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A battery of e.m.f. 3 volt and internal resistance 1.0 ohm is connected in series with copper voltameter. The current flowing in the circuit is 1.5 amperes. The resistance of voltameter will be
|
(a) Zero |
(b) 1.0 ohm |
(c) 1.5 ohm |
(d) 2.0 ohm |

In which of the following the final image is erect?
