Q. If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is :
A) 25
B) 75
C) 60
D) 50
Explanation
[Solution] λ ∝ $\frac{1}{\sqrt{K}}$, so λ becomes λ/4: a 75% decrease. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.