Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Write the mathematical form of Ampere-Maxwell circuital law.

A barometer tube reads 76cm of mercury. If the tube is gradually inclined keeping the open end immersed in the mercury reservoir, will the length of mercury column be 76cm, more than 76cm or less than 76cm?

There is force of repulsion between two parallel current carrying conductors. What idea we get about direction of flow of current?

On a metallic target, when high energy electrons are struck, electromagnetic waves are produced. Name these waves.

Two charges of magnitudes – 2Q and + Q are located at points (a, 0) and (4a, 0) respectively. What is the electric flux due to these charges through a sphere of radius ‘3a’ with its centre at the origin?

Answer the following questions:
Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

Why, some definite lines of atomic spectrum of matter is obtained?

If length of a wire of resistivity p is stretched to three times, then what will be new resistivity?

If the intensity of radiation in a photocell is increased how does the stopping potential vary?