- ADC.
- BAC.
- CDC as well as AC.
- DNeither AC nor DC.
Explanation:
$\text{X}_\text{C}\frac{1}{\omega\text{C}}=\frac{1}{0\times\text{C}}$ $\bigg\{\text{in}\stackrel{{\text{DC}}}{{\omega = 0 }}\bigg\}$
$=\infty$
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What fraction of a radioactive material will get disintegrated in a period of two half-lives
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(a) Whole |
(b) Half |
(c) One-fourth |
(d) Three-fourth |
A current carrying small loop behaves like a small magnet. If A be its area and M its magnetic moment, the current in the loop will be
|
(a) M/A |
(b) AIM |
(c) MA |
(d) |
Assertion : The surface wave propagation is used for medium wave band and for television broadcasting.
Reason : The surface waves travel directly from transmitting antenna to receiver antenna through atmosphere.
|
(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 resistance between the terminal points A and B of the given infinitely long circuit will be

|
(a) ( |
(b) (1 - |
(c) (1 + |
(d) (2 + |
A solid conducting sphere of radius R1 is surrounded by another concentric hollow conducting sphere of radius R2. The capacitance of this assembly is proportional to
|
(a) |
(b) |
(c) |
(d) |
A thin mica sheet of thickness 2 and refractive index μ = 1.5 is introduced in the path of the first wave. The wavelength of the wave used is 5000 Å. The central bright maximum will shift
|
(a) 2 fringes upward |
(b) 2 fringes downward |
(c) 10 fringes upward |
(d) None of these |
Two resistances and
when connected in series and parallel with 120 V line, power consumed will be 25 W and 100 W respectively. Then the ratio of power consumed by
to that consumed by
will be
|
(a) 1 : 1 |
(b) 1 : 2 |
(c) 2 : 1 |
(d) 1 : 4 |