What is node ?

What is power? What is its unit?

What are nodes and antinodes?

Explain the formation of stationary waves by analytical method. What are nodes and antinodes ? Show that the distance between two successive nodes or antinodes is lambda /2 .

What is CNG ? What are its constituent and what is advantage of CNG over LPG ?

What is Intercalated discs? What is their function?

What is LPG ? What are its constituent ?

What is an atom and moleule ? What are isotopes?

What is Avagadro number ? What is a mole ?

What is energy? What is its unit?

What is photoelectric effect? What are photoelectrons?