- ALight
- BElectrical current
- CBoth A and B
- DNone of the above
Explanation:
Optoelectronic devices and components are those electronic devices that operate on both light and electrical currents. This can include electrically driven light sources such as laser diodes and light-emitting diodes, components for converting light to an electrical current such as solar and photovoltaic cells and devices that can electronically control the propagation of light.
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A radioactive decay chain starts from
and produces
by successive emissions. The emitted particles can be
| (a) Two a-particles and one b-particle |
|
(b) Three |
|
(c) One a particle and two |
|
(d) One a particle and two |
Which of the following statements about the Bohr model of the hydrogen atom is false
|
(a) Acceleration of electron in n = 2 orbit is less than that in n = 1 orbit |
|
(b) Angular momentum of electron in n = 2 orbit is more than that in n = 1 orbit |
|
(c) Kinetic energy of electron in n = 2 orbit is less than that in n = 1 orbit |
|
(d) Potential energy of electron in n = 2 orbit is less than that in n = 1 orbit |
$\sqrt{6}$ times faster.
$\sqrt{6}$ times slower.
In the Young's double slit experiment, if the phase difference between the two waves interfering at a point is ∅, the intensity at that point can be expressed by the expression (Where A and B depend upon the amplitudes of the two waves)
|
(a) I = |
(b) I = |
(c) I = A + Bcos |
(d) I = A + B Cos∅ |
A step up transformer has transformation ration 5 : 3. What is voltage in secondary if voltage in primary is 60 V
|
(a) 20 V |
(b) 60 V |
(c) 100 V |
(d) 180 V |