Define work and write its units.

Define energy and write its unit and dimension.

Define work.Write it's units.

Define work function of metal and write its unit.

What is work according to science and write its units.

Define power of lens, obtain its equation and write its SI unit.

Explain emission of electron from metal.Define work function .Write its unit,work function of metal depend on which factors?

Define work. Give its unit and dimension.