What is principle used in Microwave oven? Explain.

How does one can understand the temperature dependence of resistivity of a conductor?

What are the types of magnets? Give example.

What is the phase relationship between current & voltage in an inductive? Draw
(i) Phosor diagram and
(ii) wave diagram.

Write the frequency source of production and uses of Ultraviolet radiation.

What is principal axis of the mirror?

List out the laws of photoelectric effect. (or) Write any three Laws of Photoelectric Effect

Show that the decay rate 'R' of a sample of a radionuclide is related to the number of radioactive nuclei 'N' at the same instant by the expression R = λN.

Write the two ways of preparing the nano materials.

What are Airy's discs?