- AC = C1 - C2
- BC = C1 + C2
- C1/C = 1/C1 + 1/C2
- D1/C = 1/C1 - 1/C2
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In which frequency range, space waves are normally propagated
|
(a) HF |
(b) VHF |
(c) UHF |
(d) SHF |
Eight dipoles of charges of magnitude e are placed inside a cube. The total electric flux coming out of the cube will be
|
(a) |
(b) |
(c) |
(d) Zero |
Assertion : Basic difference between an electric line and magnetic line of force is that former is discontinuous and the latter is continuous or endless.
Reason : No electric lines of forces exist inside a charged body but magnetic lines do exist inside a magnet.
|
(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. |
Two similar bar magnets P and Q, each of magnetic moment M, are taken, If P is cut along its axial line and Q is cut along its equatorial line, all the four pieces obtained have
|
(a) Equal pole strength |
(b) Magnetic moment |
|
(c) Magnetic moment |
(d) Magnetic moment M |
When a certain circuit consisting of a constant e.m.f. E an inductance L and a resistance R is closed, the current in, it increases with time according to curve 1. After one parameter (E, L or R) is changed, the increase in current follows curve 2 when the circuit is closed second time. Which parameter was changed and in what direction

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(a) L is increased |
(b) L is decreased |
(c) R is increased |
(d) R is decreased |