Q. A particle with rest mass $m_{0}$ is moving with speed of light $c$. The de-Broglie wavelength associated with it will be
A) Infinite
B) Zero
C) $m_{0}c/h$
D) $hv/m_{0}c$
Explanation
(b) $\lambda = \frac{h}{mv} = \frac{h\sqrt{1 - v^{2}/c^{2}}}{m_{0}v} = 0\ \ \ \ \ (\because v = c)$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.