
- AMove apart
- BCome closer
- CRemain at their position
- DNone of these

Explanation:
It is evident from the question that current in the two is in opposite direction so on using the formulas of current carrying straight conductor we can say that they will repel each other.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Missing lines in a continuous spectrum reveal
|
(a) Defects of the observing instrument |
|
(b) Absence of some elements in the light source |
|
(c) Presence in the light source of hot vapours of some elements |
|
(d) Presence of cool vapours of some elements around the light source |
To convert a galvanometer into a voltmeter, one should connect a
|
(a) High resistance in series with galvanometer |
|
(b) Low resistance in series with galvanometer |
|
(c) High resistance in parallel with galvanometer |
|
(d) Low resistance in parallel with galvanometer |
A straight wire carrying a current
runs along the axis of a circular current
. Then the force of interaction between the two current carrying conductors is
|
(a) ∞ |
(b) Zero |
(c) |
(d) |
Which is reverse biased diode
|
(a)
|
(b) |
(c) |
(d) |
Assertion : An artificial satellite with a metal surface is moving above the earth in a circular orbit. A current will be induced in satellite if the plane of the orbit is inclined to the plane of the equator.
Reason : The current will be induced only when the speed of satellite is more than 8 km/sec.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
The mass defect in a particular nuclear reaction is 0.3 grams. The amount of energy liberated in kilowatt hours is (Velocity of light = 3
)
|
(a) 1.5 |
(b) 2.5 |
(c) 3 |
(d) 7.5 |
The third line of Balmer series of an ion equivalent to hydrogen atom has wavelength of 108.5 nm. The ground state energy of an electron of this ion will be
|
(a) 3.4 eV |
(b) 13.6 eV |
(c) 54.4 eV |
(d) 122.4 eV |