The velocity of an electron with de Broglie wavelength of `1.0 xx 10^(2)` nm is:

The speed of an electron, having a de broglie wavelength of 10^(-10) m is

What are (a) the energy of a photon corresponding to wavelength 1.00 nm, (b) the kinetic energy of an electron with de Broglie wavelength 1.00 nm, (c) the energy of a photon corresponding to wavelength 1.00 fm, and (d) the kinetic energy of an electron with de Broglie wavelength 1.00 fm?

The energy that should be added to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is

The energy that should be added to an electron to reduce its de - broglie wavelength from 1 nm to 0.5 nm is

The energy that should be added to an electron to reduce its de Broglie wavelength from one nm to 0.5 nm is