QUESTION OF PHYSICS THAT CAN COME IN SSC

Solar cell
A p-n junction diode which convert solar energy into electrical energy is known as solar cell.

Work function
The minimum energy required by the free electron to just leave the metal surface is called as work function.

Electron emission
The phenomenon of emission of electron from a surface of metal is called a electron emission.

Type of electron emission
1.   thermodynamic emission
it is a phenomenon of emission of electron from metal surface when heated suitable.

2.  Photo electric emission 
It is a phenomenon of emission of electron from the metal surface when light radiation of suitable frequency fall on it.

3.   Field emission
It is the phenomenon of emission of electron from the metal surface under the application of strong electric field.

4.   Secondary emission
It is the phenomenon emission of electron from the metal surface when fast moving electron strike the metal surface.

Photoelectric effect

The phenomenon of emission of electron from the metal surface when exposed to light energy of suitable frequency is called as photoelectric effect.

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