MCQ
Potential due to charge q at its own location is:
- AZero.
- BConstant.
- CInfinite.
- DNone.
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In the following circuit, bulb rated as 1.5 V, 0.45 W. If bulbs glows with full intensity then what will be the equivalent resistance between X and Y
|
(a) 0.45 W |
(b) 1 W |
(c) 3 W |
(d) 5 W |
The focal length of a converging lens are fv and fr for violet and red light respectively:
Two resistances are joined in parallel whose resultant is ohm. One of the resistance wire is broken and the effective resistance becomes 2Ω. Then the resistance in ohm of the wire that got broken was
|
(a) 3/5 |
(b) 2 |
(c) 6/5 |
(d) 3 |