- ALight Carrying Diode
- BLiquid Crystal Display
- CLong Crystal Display
- DLight Crystal Display
Explanation:
LCD stands for "Liquid Crystal Display".
LCD is a special thin flat panel that can let light go through it, or can block the light. (Unlike an LED it does not produce its own light).
The panel is made up of several blocks, and each block can be in any shape. Each block is filled with liquid crystals that can be made clear or solid, by changing the electric current to that block.
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In hydrogen atom, an electron is revolving in the orbit of radius 0.53
with 6.6
rotations/second. Magnetic field produced at the centre of the orbit is
|
(a) 0.125 |
(b) 1.25 |
(c) 12.5 |
(d) 125 |
Substance on the choroid is
|
(a) Japan black |
(b) Nigrim pigment |
(c) Carbon black |
(d) Platinum black |
The average kinetic energy of the thermal neutrons is of the order of (Boltzmann's constant
|
(a) 0.03 eV |
(b) 3 eV |
(c) 3 KeV |
(d) 3 MeV |
Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added
|
(a) The material obtained will be N-type germanium in which electrons and holes are equal in number |
|
(b) The material obtained will be P-type germanium |
|
(c) The material obtained will be N-type germanium which has more electrons than holes at room temperature |
|
(d) The material obtained will be N-type germanium which has less electrons than holes at room temperature |