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GALLIUM PHOSPIDE: It has band gap of 2.3ev. it can be used for light emitting diodes which can emit green or red light. The red light is obtained with zinc or cadmium oxide doping.
SELENIUM: It is found in crystalline and non-crystalline form. It is used as rectifier material for photo voltaic cells and for xerographic printing. Selenium films are used as photo electric light meters. Its melting point is 2200C.
LEAD: it is soft heavy and bluish gray metal. It is highly resistant to many chemical actions but can corrode by nitric acid, lime and rotten organic substances. Lead and its compounds are toxic. It is mechanically weak it cannot withstand vibrations at high temperatures. It alloys easily with Tin and zinc and forms many commercial alloys, including solders and bearing metals.
Dimension of unit impulse DIMENSION ? The dimension of impulse is [MLT -1 ]
ELASTIC COLLISION: "The collision in which both linear momentum and K.E are conserved is said to be elastic collision". OR "In the ideal case when no K
An overhead light fixture holds three light bulbs. Every light bulb has a luminous flux of 1892 lm. The light fixture is 1.8 m above the floor. What is the illuminance o
A single turn coil of radius 5cm is placed on a plane paper and magnetic flux, directed perpendicularly out of the paper changes according to φ = 11t 2 + 7t + 15. Determine the ma
Three capacitors of capacitance 6µF each are available. Determine the minimum and maximum capacitances that could be acquired.
Que: What is an electric current? Answer: From Ohm's Law V = IR amid R being a constant one finds that I = V/R. therefore current is equal to voltage divided by resis
Applications of Superconductors - 1. Electrical Machines 2. Power Cables 3. Electro Magnets 4. Amplifiers 5. Cryotron 6. Magnetic Leviation 7. A 15 Phases
wrench from the top of an 80 m high tower what is the velocity of the wrench when it strikes the ground?
what is constant
UNIFORM ACCELERATION: If velocity of a body alters by equal amounts in equivalent intervals of time, then the body is said to have uniform acceleration. OR If average a
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