| 1 |
Beats is a result of the phenomenon of
|
Resonace<br>
Interference <br>
Reflection <br>
Echo
|
| 2 |
The resistance of a fuse wire is
|
Low <br>
Moderate <br>
Very small <br>
Very high <br>
|
| 3 |
Which one of the following colours has he longest wavelength?
|
Yellow <br>
Blue <br>
Red <br>
Green <br>
|
| 4 |
Permanent magnets can be made from
|
Cobalt <br>
Aluminum <br>
Zinc <br>
Lead<br>
|
| 5 |
Superconductivity was discovered by:
|
H.K. Onmes<br>
Thomson <br>
Einstein <br>
Faraday <br>
|
| 6 |
Superconductivity is due to
|
Electrons <br>
Protons <br>
Pair of electrons <br>
Neutrons <br>
|
| 7 |
the focal length of a convex lens is maximum for
|
Blue <br>
Green <br>
Yellow <br>
Red <br>
|
| 8 |
The firs scientist who weighed the earth was
|
Galileo <br>
Newton <br>
Cavendish <br>
Thomson<br>
|
| 9 |
Viscosity in liquids is due to
|
Gravitational force <br>
Intermolecular force <br>
Frictional force between molecules <br>
Repulsive force between molecules<br>
|
| 10 |
if the radius of the earth were the to shrink by one percent, it mass remaining the same the acceleration due to gravity of the earth's surface would
|
Decreases <br>
Increases<br>
Remains the same <br>
None of these<br>
|
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