What is Lorentz force? Also write the expression for it?

What is Lorentz force ? Write down its expression.

What is force?

Write the expression for mean free path.

Write the expression for Lorentz force.

(1) HPO_(4)^(2-) can act both as a Bronsted base and as a Bronsted acid. Write the equation of equilibrium established by HPO_(4)^(2-) as an acid and a base in aqueous solution. Also write the expressions of K_(a) & K_(b) in two cases. (2) What are the conjugate acid and base of HS^(-) ?

What kind of force acts between to unlike parallel currents ? Write down the expression for the magnitude of this force.

Write down the expression of combined mean.

What do you understand by resolving power of a astronomical telescope? Write down the expression for resolving power of an astronomical telescope.

What do you understand by resolving power of a microscope? Write down the expression for the power.

State de Broglie's hypothesis and write down the expression for the wavelength of matter waves.