The magnetic susceptibility is
|
(a) |
(b) |
(c) |
(d) |
The magnetic susceptibility is
|
(a) |
(b) |
(c) |
(d) |
(a)
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Radius of
nucleus is 3 Fermi. The radius of
nucleus will be
|
(a) 5 Fermi |
(b) 6 Fermi |
(c) 11.16 Fermi |
(d) 8 Fermi |
A gate in which all the inputs must be low to get a high output is called
|
(a) A NAND gate |
(b) An inverter |
(c) A NOR gate |
(d) An AND gate |
A parallel plate capacitor carries a charge q. The distance between the plates is doubled by application of a force. The work done by the force is
|
(a) Zero |
(b) |
(c) |
(d) |
With a change of load resistance of a triode, used as an amplifier, from 50 kilo ohms to 100 kilo ohms, its voltage amplification changes from 25 to 30. Plate resistance of the triode is
|
(a) 25 kW |
(b) 75 kW |
(c) 7.5 kW |
(d) 2.5 kW |
The effective length of a magnet is 31.4 cm and its pole strength is 0.5 Am. The magnetic moment, if it is bent in the form of a semicircle will be
|
(a) |
(b) |
(c) |
(d) |
Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is

|
(a) |
(b) 4 |
(c) Zero |
(d) |
A 2 volt battery, a 15 Ω resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of potentiometer wire is 5 Ω, then the potential gradient of the potentiometer wire is
|
(a) 0.005 V/cm |
(b) 0.05 V/cm |
(c) 0.02 V/cm |
(d) 0.2 V/cm |