Explanation:
In an LC circuit current oscillates between, maximum and minimum value. So, LC circuit needs oscillations (electrical). It occurs due to discharging and charging of capacitor and magnetisation and demagnetisation of inductor
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Radioactive nuclei that are injected into a patient collect at certain sites within its body, undergoing radioactive decay and emitting electromagnetic radiation. These radiations can then be recorded by a detector. This procedure provides an important diagnostic tool called
|
(a) Gamma camera |
(b) CAT scan |
|
(c) Radiotracer technique |
(d) Gamma ray spectroscopy |
The oscillating electric and magnetic vectors of an electromagnetic wave are oriented along
|
(a) The same direction but differ in phase by 90° |
|
(b) The same direction and are in phase |
|
(c) Mutually perpendicular directions and are in phase |
|
(d) Mutually perpendicular directions and differ in phase by 90° |
In a magnetic field of 0.05T, area of a coil changes from 
to 
without changing the resistance which is 2W. The amount of charge that flow during this period is
|
(a) 2.5 |
(b) 2 |
|
(c) |
(d) |
The unit of mutual conductance of a triode valve is
|
(a) Siemen |
(b) Ohm |
(c) Ohm metre |
(d) Joule Coulomb–1 |
In the uranium radioactive series, the initial nucleus is 
and the final nucleus is 
. When the uranium nucleus decays to lead, the number of α - particles emitted will be
|
(a) 1 |
(b) 2 |
(c) 4 |
(d) 8 |
The dispersive power is maximum for the material
|
(a) Flint glass |
(b) Crown glass |
(c) Mixture of both |
(d) None of the above |
