Semiconductors — Physics STD 11 Science — Question

What are donor and acceptor impurities?

Explain the terms inertial and non-inertial frame of reference.

State applications of thermal expansion.

What are Lenz’s law, Ampere’s law and Faraday’s law?

Draw a graph showing the variation of gravitational acceleration due to the depth and altitude from the Earth’s surface.

An electric current in a metallic conductor such as a wire is due to flow of electrons, the negatively charged particles in the wire. What is the role of the valence electrons which are the outermost electrons of an atom?

State advantages of friction.

Define amplitude and wavelength of a wave.

A scale in a lab measures the mass of object consistently more by 500 g than their actual mass. How would you describe the scale in terms of accuracy and precision?