Explain the principle and working of a light emitting diode, Physics

Define, with the help of a schematic diagram, the principle and working of a Light Emitting Diode. What criterion is kept in mind whereas choosing the semiconductor material for such a device? Write any two benefits of Light Emitting Diode over conventional incandescent lamps.

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to find the time taken by the stone to hit the elevetor, An open platform ...

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Working of nicol prism and its uses as polarizer and analyzer

fraction of vacancy sites at double the temperature, The fraction of vacan...

The fraction of vacancy sites in a metal is 1X10 -10 at 500 0 C. What will be the fraction of vacancy sites at double the temperature?

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In class, we learned that the force on a dipole can be written as F = (p.Δ)E This force can be used to sort particles with no net charge but with a dipole moment in a method cal

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