MCQ
Coulomb’s law is true for:
- AAtomic distances (= 10–11 m).
- BNuclear distances (= 10–15 m).
- CCharged as well as uncharged particles.
- DAll the distances.
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The incident photon involved in the photoelectric effect experiment.
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(a) Completely disappears |
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(b) Comes out with an increased frequency |
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(c) Comes out with a decreased frequency |
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(d) Comes out without change in frequency |
The wavelength of the first line of Balmer series is 6563
. The Rydberg constant for hydrogen is about
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(a) 1.09 |
(b) 1.09 |
(c) 1.09 |
(d) 1.09 |
A coil takes 15 min to boil a certain amount of water, another coil takes 20 min for the same process. Time taken to boil the same amount of water when both coil are connected in series
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(a) 5 min |
(b) 8.6 min |
(c) 35 min |
(d) 30 min |