"Electric field lines always meet the surface of a conductor normally" - justify the statement.

Define electric field lines.

Why electric fields just outside the surface of a conductor is perpendicular to the surface?

The direction of electrostatic field intensity at a point on the surface of a charged conductor is along the tangent drawn on the surface at that point . Is the statement true or false ?

Explain— Electric field lines cut the equipotential surface normally.

When light incident on a metal has energy less than the work function of the metal, then no electron is emiited from the surface of the metal. Mathematically justify this statement.

Show that electric field intenstity on the surface of a charged conductor is vecE=sigma/ε_0 vecn where sigma is the surface density of charge and vecn is the outward pointing unit normal vector.

A metal surface does not emit any electron if the energy of incident radiation is less than the photoelectric work function of the metal - justify the statement mathematically.

Charge always resides on the outer surface of a conductor ' - describe an experiment to prove it .

State Fleming's left hand rule related with the force acting on a conductor placed normally with the direction of a magnetic field.