Physics

Problem

The de Broglie wavelength of an electron having kinetic energy

E

\lambda

. If the kinetic energy of electron becomes

\frac{E}{4}

, then its de-Broglie wavelength will be : (a)

\frac{\lambda}{\sqrt{2}}

(b)

\frac{\lambda}{2}

(c)

2\lambda

(d)

\sqrt{2}\lambda