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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 do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected
What are the methods for producing Ultrasonic waves? Ultrasonic Production: Three methods there for producing Ultrasonic waves are as given below: a. Mechanical generator
Simple Harmonic Motion II In physics, simple harmonic motion is a type of periodic motion where the restoring force is directly proportional to the displacement. It can serve a
If a particle is projected vertically upward in a constant gravitational field with an initial speed v 0 . If there is a retarding force proportional to the square of the instantan
a rocket is projected upwards with a velocity of 490. find te time taken to reach the ground
Sketch a graph showing the relationship among the magnetic field around a straight, current-carrying wire, and the distance from the wire. This is a graph of y = 1/x.
What is the cause of Brownian motion? Molecules in a gas move constantly, freely, randomly, in all directions and at high speeds. They are able to do so because the intermolecu
a ball is thrown horizontally from a point 100 m above the ground with a speed of 20 m/sec .find the time it takes to reach the ground...
Consider the 4-f system below where an object is placed at the input plane and is illuminated by a plane wave With the object from part a) inserted in the input plane, a m
Write down Gauss law in electrostatics. get its differential form in vacuum.
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