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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.
How is absorption occurred in fibre material? Absorption is associated to the fibre material. It is caused by three diverse mechanisms, which are: a. Absorption by atomic de
The birghtness of objects past Neptune actually varies approximately as 1/d^4. Why is that the case?
what is average value and r.m.s value
estimation of nuclear fusion on basis of liquid drop model
write a program about f=ma
as flux = E.A and flux density is equal to flux/A then why A/A cannot e cancelled ?
Distinguish between negative and positive crystal?
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.
theory of searles magnetometer for do the experiments
APPLICATION TO BALLISTIC MISSILES: "An unpowered and unguided missile is known as ballistic missile". The path followed by ballistic missile is known as "ballistic trajectory"
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