Question

Two electrons are moving with different kinetic energies. If the first electron is moving with kinetic energy \(k\) and the second electron with kinetic energy \(4k\), the ratio of their de Broglie wavelengths respectively will be:

• A. \(1:2\)
• B. \(1:4\)
• C. \(2:1\)
• D. \(4:1\)

Hint:

For the same particle, de Broglie wavelength varies inversely as the square root of kinetic energy: \[ \lambda \propto \frac{1}{\sqrt{K}} \]

Answer 1

The Correct Option is C