- AVector quantity.
- BScalar quantity.
- CDimensions less quantity.
- DNone.
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A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0.16 Tesla experiences a torque of magnitude 0.032 Joule. The magnetic moment of the bar magnet will be
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(a) 0.23 Joule/Tesla |
(b) 0.40 Joule/Tesla |
(c) 0.80Joule/Tesla |
(d) Zero |
Which is the wrong statement in following sentences? A device in which P and N-type semiconductors are used is more useful then a vacuum type because
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(a) Power is not necessary to heat the filament |
|
(b) It is more stable |
|
(c) Very less heat is produced in it |
|
(d) Its efficiency is high due to a high voltage across the junction |
$\text{y}=(0.001\text{mm})\sin\Big[(50\text{s}^{-1})\text{t}+(2.0\text{m}^{-1})\text{x}\Big]$