The magnetic susceptibility is
|
(a) |
(b) |
(c) |
(d) |
The magnetic susceptibility is
|
(a) |
(b) |
(c) |
(d) |
(a)
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A magnetic needle suspended horizontally by an unspun silk fibre, oscillates in the horizontal plane because of the restoring force originating mainly from
| (a) The torsion of the silk fibre |
| (b) The force of gravity |
|
(c) The horizontal component of earth's magnetic field |
| (d) All the above factors |
X-rays when incident on a meta
|
(a) Exert a force on it |
(b) Transfer energy to it |
|
(c) Transfer pressure to it |
(d) All of the above |
Five resistors are connected as shown in the diagram. The equivalent resistance between A and B is
| (a) 6 ohm | (b) 9 ohm |
(c) 12 ohm |
(d) 15 ohm |
Radius of the first orbit of the electron in a hydrogen atom is 0.53 Å. So, the radius of the third orbit will be
|
(a) 2.12 Å |
(b) 4.77 Å |
(c) 1.06 Å |
(d) 1.59 Å |
The charge on a capacitor of capacitance 10 μF connected as shown in the figure is

|
(a) 20 μC |
(b) 15 μC |
(c) 10 μC |
(d) Zero |
Which one of the following statements about uranium is correct
|
(a) |
|
(b) Fast neutrons trigger the fission process in |
|
(c) |
|
(d) |
Two point charges +3μC and +8μC repel each other with a force of 40N. If a charge of -5μC is added to each of them, then the force between them will become
|
(a) - 10 N |
(b) +10 N |
(c) +20 N |
(d) - 20N |
The amplification factor of a triode is 20. If the grid potential is reduced by 0.2 volt then to keep the plate current constant its plate voltage is to be increased by
|
(a) 10 volt |
(b) 4 volt |
(c) 40 volt |
(d) 100 volt |