Q. Which of the following particles moving with same velocity would be associated with smaller de-Broglie wavelength?
A) Helium molecule
B) Oxygen molecule
C) Hydrogen molecule
D) Carbon molecule
Explanation
(b)
De-Broglie wavelength,
$\lambda = \frac{h}{mv}$
or $\lambda = \frac{1}{m}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.