- A$X _C=-\frac{1}{\omega C}$
- B$X _{ C }=\frac{1}{\omega C}$
- C$X _{ C }=-\frac{j}{\omega C}$
- D$X _{ C }=\frac{1}{\sqrt{\omega C}}$
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The unit of inductance is
|
(a) Volt/ampere |
(b) Joule/ampere |
(c) Volt-sec/ampere |
(d) Volt-ampere/sec |
While using an electric bulb, the reflection for street lighting should be from
|
(a) Concave mirror |
(b) Convex mirror |
(d) Parabolic mirror |
(d) Parabolic mirror |
When the electron in the hydrogen atom jumps from 2nd orbit to 1st orbit, the wavelength of radiation emitted is 𝜆. When the electrons jump from 3rd orbit to 1st orbit, the wavelength of emitted radiation would be
|
(a) |
(b) |
(c) |
(d) |
A person sees his virtual image by holding a mirror very close to the face. When he moves the mirror away from his face, the image becomes inverted. What type of mirror he is using
|
(a) Plane mirror |
(b) Convex mirror |
(c) Concave mirror |
(d) None of these |
Which of the following figures correctly shows the phase relation between the input signal and the output signal of triode amplifier
|
(a)
|
(b)
|
|
(c)
|
(d)
|
A uniform wire of resistance R is uniformly compressed along its length, until its radius becomes n times the original radius. Now resistance of the wire becomes
|
(a) |
(b) |
(c) |
(d) nR |
In a cyclotron, the angular frequency of a charged particle is independent of
|
(a) Mass |
(b) Speed |
(c) Charge |
(d) Magnetic field |