State Carnot's principle

How is a wavefront defined? State Huygen's principle of propagation of light wave.

State the principle of working of a potentiometer.

State the principle of electrodialysis of colloidal solutions?

State the principle of superposition of waves. Mentiona phenomenon that occurs due to superposition of two waves.

State the principle of conservation of energy.How can it be proved in case of a freely falling body?

State the working principle of a transformer. What is hysteresis loss in transformer?

Write the working principle of cyclotron.