Q. Which of the following figures represents the variation of particle momentum and associated de-Broglie wavelength?
A) [image:11_image17.emf]
B) [image:11_image18.emf]
C) [image:11_image19.emf]
D) [image:11_image20.emf]
Explanation
(d) $\because\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \lambda = \frac{h}{p}\ \Rightarrow \lambda \propto \frac{1}{p}$
$ie,\ $when $\lambda$ increases, $p$ decreases.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.