A horizontal straight conductor kept in north-south direction falls under gravity, then
|
(a) A current will be induced from South to North |
|
(b) A current will be induced from North to South |
|
(c) No induce e.m.f. along the length of conductor |
|
(d) An induced e.m.f. is generated along the length of conductor |
(c) No induce e.m.f. along the length of conductor
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In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of
| (a) 1 MeV | (b) 0.1 MeV |
(c) 1eV |
(d) 5 eV |
The capacity of an air condenser is 2.0 mF. If a medium is placed between its plates. The capacity becomes 12 mF. The dielectric constant of the medium will be
|
(a) 5 |
(b) 4 |
(c) 3 |
(d) 6 |
Hubble's law is related with
|
(a) Comet |
(b) Speed of galaxy |
(c) Black hole |
(d) Planetary motion |