- ✓12th part of the mass of carbon atom
- B12th part of the mass of oxygen atom
- COne 16th of the mass of the hydrogen atom
- DOne 16th of the mass of a helium atom
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A 2V battery is connected across the points A and B as shown in the figure given below. Assuming that the resistance of each diode is zero in forward bias and infinity in reverse bias, the current supplied by the battery when its positive terminal is connected to A is
|
(a) 0.2 A |
(b) 0.4 A |
(c) Zero |
(d) 0.1 A |
The approximate ratio of resistances in the forward and reverse bias of the PN-junction diode is
|
(a) |
(b) |
(c) |
(d) |
For a triode m = 64 and gm =1600 m mho. It is used as an amplifier and an input signal of 1V (rms) is applied. The signal power in the load of 40 kW will be
|
(a) 23.5 mW |
(b) 48.7 mW |
(c) 25.6 mW |
(d) None of these |
Two identical thin rings each of radius R meters are coaxially placed at a distance R meters apart. If Q1 coulomb and Q2 coulomb are respectively the charges uniformly spread on the two rings, the work done in moving a charge qfrom the centre of one ring to that of other is
|
(a) Zero |
(b) |
(c) |
(d) |

The thermocouple is based on the principle of
|
(a) Seebeck effect |
(b) Thomson effect |
(c) Peltier effect |
(d) Joule effect |