Radioactivity is
|
(a) Irreversible process |
(b) Self disintegration process |
|
(c) Spontaneous process |
(d) All of the above |
Radioactivity is
|
(a) Irreversible process |
(b) Self disintegration process |
|
(c) Spontaneous process |
(d) All of the above |
(d) All of the above
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The radius of a nucleus of a mass number A is directly proportional to
|
(a) |
(b) A |
(c) |
(d) |
At which place, earth's magnetism become horizontal
|
(a) Magnetic pole |
(b) Geographical pole |
(c) Magnetic meridian |
(d) Magnetic equator |
For ferromagnetic material, the relative permeability (, versus magnetic intensity (H) has the following shape
|
(a) |
(b) |
(c) |
(d) |
In the absence of an electric field, the mean velocity of free electrons in a conductor at absolute temperature (T) is:
A radioactive reaction is
→
. How many α and β particles are emitted
|
(a) 10α, 6β |
(b) 4 protons, 8 neutrons |
|
(c) 6 electrons, 8 protons |
(d) 6β, 8α |