- Ainfinity
- Bq/ 2
- C2q
- Dzero
Explanation:
Every condenser is made with two plates. The charge on one plate is +Q and other is −Q.
Thus total charge of condenser is Qt = +Q - Q = 0
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When the reflecting or refracting rays do not actually intersect but appear to intersect when produced backwards,
There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is
|
(a) 3 |
(b) 4 |
(c) 6 |
(d) 5 |
In a diffraction pattern by a wire, on increasing diameter of wire, fringe width
|
(a) Decreases |
|
(b) Increases |
|
(c) Remains unchanged |
|
(d) Increasing or decreasing will depend on wavelength |
When current is passed in antimony-bismuth couple, then
|
(a) The junction becomes hot when the current is from bismuth to antimony |
|
(b) The junction becomes hot when current flows from antimony to bismuth |
|
(c) Both junctions become hot |
|
(d) Both junctions become cold |
Three resistances of magnitude 2, 3 and 5 ohm are connected in parallel to a battery of 10 volts and of negligible resistance. The potential difference across 3 Ω resistance will be
|
(a) 2 volts |
(b) 3 volts |
(c) 5 volts |
(d) 10 volts |
The spectrum of iodine gas under white light will be
|
(a) Only violet |
|
(b) Bright lines |
|
(c) Only red lines |
|
(d) Some black bands in continuous spectrum |

If all the resistors shown have the value 2 ohm each, the equivalent resistance over AB is
|
(a) 2 ohm |
(b) 4 ohm |
(c) 1 |
(d) 2 |
A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across the
|
(a) Cell is < E |
(b) Cell is E |
(c) Capacitor is > E |
(d) Capacitor is < E |