Define electron volt.

The longest wavelength that can eject photo electrons from pt is 1950overset@A . Calculate its work function in electron volt.

Photoelectric threshold wavelength of Tungsten is 2730overset@ A . Calculate its work function in electron volts. ( C = 3 xx 10^8 m//Sec., h = 6.63 xx 10^-34 Js )

Define ether.

Calculate the work function in electron volt for indium metal, given that photoelectric threshold wavelength is 6800overset@A .

Define electronegativity. How does it differ from electron gain enthalpy?

Define leaf.

Define seed.

What is electron volt ?

Define- Heat.

Choose the correct answer from option given and write it with its corresponding alphabet: Electron volt is a unit of