Pure Si at 500 K has equal no. of electron (n_e) and hole (n_h) concentrations of 1.5 ×10^16 m^-3. Doping by Indium increases n_h to 4.5 ×10^22 m^-3. Find the no. of electrons in the doped semiconductor and identify if it is p-type or n-type.

NEET PYQ, 12P14 Semiconductor Materials and Devices, p-type n-type semiconductor

12P14 Semiconductor Study Notes

        Crystal Lattice and Logic Gates Study Notes -- PDF Notes

Interaction with 3D Models for Crystal Lattice SCC BCC FCC

Quantity of water or liquid flowing out of a tank through a hole orifice at the bottom of the tank. Mathematical Modelling and Experimental Results.

Quantity of water or liquid flowing out of a tank through a hole orifice at the bottom of the tank. Mathematical Modelling and Experimental Results.

Application of Integration methods to model quantities that are changing continuously in a non-linear fashion with respect to time.

This work was started as a way to illustrate the power of calculus in mathematical modelling to class 11 and 12 students, when we deal with quantities that are not changing linearly with respect to time or other variable. However the integration methods look slightly complicated and may be suitable only for college level students and fluid mechanics students.

Mathematical Model PDF File

Excel Calculations and Graphs Excel File