In the given network capacitance, 
and 
. What is the resultant capacitance between A and B
|
(a) 2.2 μF |
(b) 3.2 μF |
(c) 1.2 μF |
(d) 4.7 μF |
(b) 3.2 μF
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The current in a coil decreases from 1 A to 0.2 A. In 10sec. Calculate the coefficient of self inductance. If induced emf is 0.4 volt.
|
(a) 5 H |
(b) 3 H |
(c) 4 H |
(d) 2 H |
A parallel plate capacitor has circular plates of 0.08m radius and 1.0 
separation. If a P.D. of 100 volt is applied, the charge will be
|
(a) 1.8 |
(b) 1.8 |
(c) 1.8 |
(d) None of these |
A neon sign does not produce
|
(a) Line spectrum |
(b) An emission spectrum |
|
(c) An absorption spectrum |
(d) Photons |
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 photon and an electron have equal energy E. 
is proportional to
|
(a) |
(b) 1/ |
|
(c) 1/E |
(d) Does not depend upon E |
