- 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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Two coherent light sources S1 and S2 (l= 6000 Å) are 1mm apart from each other. The screen is placed at a distance of 25 cm from the sources. The width of the fringes on the screen should be
|
(a) 0.015 cm |
(b) 0.025 cm |
(c) 0.010 cm |
(d) 0.030 cm |
In the figure given the value of X resistance will be, when the p.d. between B and D is zero
|
(a) 4 ohm |
(b) 6 ohm |
(c) 8 ohm |
(d) 9 ohm |
The dimensions of magnetic flux are
|
(a) |
(b) |
(c) |
(d) |
A solenoid is 1.0 metre long and it has 4250 turns. If a current of 5.0 ampere is flowing through it, what is the magnetic field at its centre [![]()
|
(a) 5.4 |
(b) 2.7 |
|
(c) 1.35 |
(d) 0.675 |
We use flint glass prism to disperse polychromatic light because light of different colours
|
(a) Travel with same speed |
|
(b) Travel with same speed but deviate differently due to the shape of the prism |
|
(c) Have different anisotropic properties while travelling through the prism |
|
(d) Travel with different speeds |