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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.
is door a example of translatory motion
ISOLATED SYSTEM: "When a number of bodies are like that they can exert force upon one another and no external agency exerts a force on them, they are said to form an isolated s
Why the fringes are in circular form and how does it form?
Are fibers safe? Fiber optics are passive components, hence do not use power to generate light, like the case with lamps. When light conductors only carry light from one point
what will happen if gravity becomes zero?is it possible in earth?
malaria is caused by? please tell me
is the potential in the cavity of a charged conductor zero
An ice-skater with a mass of 75.0 kg pushes off against a second skater with a mass of 42.0 kg. Both skaters are initially at rest. After the push, the larger skater moves
In a young's double slit interference pattern, the fringe width is 0.1 mm. Determine the fringe width if the wave length of light is increased by 10% and the distance between the s
Sound waves are being used to determine the depth of a freshwater lake, as shown in the figure below. If the water is 25°C and it takes 1.2 s for the echo to return to the sens
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