- AMagnetic field is far apart.
- BMagnetic fields is zero.
- CMagnetic fields is greater.
- DAll.
Explanation:
Field lines are used to represent a magnetic field a field line is the path along which a hypothetical free north pole would tend to move. The direction of the magnetic field at a point is given by the direction that a north pole placed at that point would take. Field lines are shown closer together where the magnetic field is greater.
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$\text{Zero.}$
$\text{v}_0$
$\sqrt2\text{v}_0$
$2\text{v}_0$
The bottom of a container filled with liquid appear slightly raised because of
|
(a) Refraction |
(b) Interference |
(c) Diffraction |
(d) Reflection |
In Milikan’s experiment, an oil drop having charge q gets stationary on applying a potential difference V in between two plates separated by a distance ‘d’. The weight of the drop is
|
(a) qVd |
(b) q |
(c) |
(d) q |
A person using a lens as a simple microscope sees an:
A particle of charge q and mass m moving with a velocity v along the x-axis enters the region x > 0 with uniform magnetic field B along the direction. The particle will penetrate in this region in the x-direction upto a distance d equal to
|
(a) Zero |
(b) |
(c) |
(d) Infinity |
Three capacitors of 2μF, 3μF and 6μF are joined in series and the combination is charged by means of a 24 volt battery. The potential difference between the plates of the 6 μF capacitor is
|
(a) 4 volt |
(b) 6 volt |
(c) 8 volt |
(d) 10 volt |
A parallel plate capacitor having a plate separation of 2 mm is charged by connecting it to a 300 V supply. The energy density is
|
(a) 0.01 J/m3 |
(b) 0.1 J/m3 |
(c) 1.0 J/m3 |
(d) 10 J/m3 |