Explanation:
$\text{X}_\text{C}=\frac{1}{\text{C}\omega}=10000\Omega$
ammeater reading $=\text{I}_\text{rms}=\frac{\text{V}_\text{rms}}{\mid\text{jX}_\text{c}\mid}=\frac{50}{10000}=5\text{mA}$
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The ratio of the longest to shortest wavelengths in Brackett series of hydrogen spectra is
|
(a) |
(b) |
(c) |
(d) |
Substances in which the magnetic moment of a single atom is not zero, is known as
|
(a) Diamagnetism |
(b) Ferromagnetism |
(c) Paramagnetism |
(d) Ferrimagnetism |
The depletion layer in the P-N junction region is caused by
| (a) Drift of holes | (b) Diffusion of charge carriers |
| (c) Migration of impurity ions |
(d) Drift of electrons |
A metal wire of specific resistance 64 
and length 198 cm has a resistance of 7 ohm, the radius of the wire will be
|
(a) 2.4 cm |
(b) 0.24 cm |
(c) 0.024 cm |
(d) 24 cm |
A lens of power +2 diopters is placed in contact with a lens of power – 1 diopter. The combination will behave like
|
(a) A convergent lens of focal length 50 cm |
|
(b) A divergent lens of focal length 100 cm |
|
(c) A convergent lens of focal length 100 cm |
|
(d) A convergent lens of focal length 200 cm |
A photon and an electron have equal energy E. 
is proportional to
|
(a) |
(b) 1/ |
|
(c) 1/E |
(d) Does not depend upon E |
