Question
The wavelength of an electron of kinetic energy $4.50\times10^{-29}$ J is _________ $\times 10^{-5}$ m. (Nearest integer)
Given : mass of electron is $9\times10^{-31}$ kg, h $=6.6\times10^{-34}$ J s
Correct Answer
7
The wavelength of an electron of kinetic energy $4.50\times10^{-29}$ J is _________ $\times 10^{-5}$ m. (Nearest integer)
Given : mass of electron is $9\times10^{-31}$ kg, h $=6.6\times10^{-34}$ J s