State and prove principle / theorem of perpendicular axes.

State and prove the principle / Theorem of parallel axes.

State and prove principle of parallel axes.

State principle of perpendicular axis.

State and prove the Pythagoras theorem

If I_x and l_y are moments of inertia of the lamina in the plane and I_z ismoment of inertia of the lamina perpendicular to the plane, -then the mathematical statement of the principle of perpendicular axes is

State and prove Brewster's Law.

State Archimedes' principle.

State Huygens' Principle.

State and explain principle of potentiometer.

State Theorem of parallel Axes