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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.
Match the name of the phenomenon with the explanation of the phenomenon. Answer: There isn't such thing as orthomagnetism. The prefixes can assist you out with the answ
B-Infrared (IR) Radiant Heat Heat radiation can be achieved by using infrared (IR) radiation it penetrates about 3mm in the skin. excessive exposure can cause erythema(redden
essay writting
Define Hole in Wall (Princeton)? A container is separated into two parts I and II by a partition with a small hole of diameter d Helium gas in the two parts is held at temper
a sphere is at rest on a wall at a angle of 3,4(slpoe) to the left. it also rest against a vertical wall. we are to find the magnitude of the resultant force at the vertical wall.
implementation of nand gate
Does a piece of glass reflect more light than a piece of paper?
Beat period : The time interval among two successive beats is called as beat period. Beat frequency : The number of beats given per second is called as beat frequency.
Why diffraction can't occur if slit width is less than the wavelength of the light? Can you explain?
Heaviest particle is: (1)Meson (2)Neutron (3)Proton (4)Electron Ans: 2b)Neutron
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