- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is NOT the correct explanation of A.
- CA is true but R is false.
- DA is false and R is also false.
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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 |
Assertion : If a proton and an electron are placed in the same uniform electric field. They experience different acceleration.
Reason : Electric force on a test charge is independent of its mass.
|
(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. |
Three charges -
and
are placed as shown in the figure. The x-component of the force on -
is proportional to

|
(a) |
(b) |
(c) |
(d) |
Electrons move at right angles to a magnetic field of 1.5 Tesla with a speed of 6
. If the specific charge of the electron is 1.7
C/kg. The radius of the circular path will be
|
(a) 2.9 cm |
(b) 3.9 cm |
(c) 2.35 cm |
(d) 3 cm |
An electric potential difference will be induced between the ends of the conductor shown in the diagram, when the conductor moves in the direction

|
(a) P |
(b) Q |
(c) L |
(d) M |
For the Bohr's first orbit of circumference 2πr, the de-Broglie wavelength of revolving electron will be
|
(a) 2πr |
(b) πr |
(c) |
(d) |
The error in measuring the current with a tangent galvanometer is minimum when the deflection is about
|
(a) 0o |
(b) 30o |
(c) 45o |
(d) 60o |