- AThe general theory of relativity
- BThe special theory of relativity
- CThe explanation of photoelectric effect
- DThe explanation of quantum theory
Explanation:
Einstein proposed the special theory of relativity and the general theory of relativity. Also, he gave a explanation to quantum theory. According to Nobel committee other theories were in controversy.
The classical theory could not explain photoelectric effect satisfactorily. The photoelectric equation given by Einstein explains photoelectric effect satisfactorily.
Hence, Einstein was awarded Noble prize for the explanation of photoelectric effect.
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The inward and outward electric flux for a closed surface in units of
are respectively
and
Then the total charge inside the surface is [where
= permittivity constant]
|
(a) |
(b) - |
(c) |
(d) |
If a coil of metal wire is kept stationary in a non-uniform magnetic field, then
|
(a) An e.m.f. is induced in the coil |
(b) A current is induced in the coil |
|
(c) Neither e.m.f. nor current is induced |
(d) Both e.m.f. and current is induced |
The binding energy of deuteron
is 1.112 MeV per nucleon and an α - particle
has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction
the energy Q released is
|
(a) 1 MeV |
(b) 11.9 MeV |
(c) 23.8 MeV |
(d) 931 MeV |
Sun radiates continuously and maintains its brightness because
|
(a) Helium is converted into iron in its core |
|
(b) Of fusion of hydrogen nuclei into helium |
|
(c) Fusion of helium in hydrogen |
|
(d) Burning of carbon, in its core |