Q. A cricket ball of 0.5 kg is moving with a velocity of 100 m/s. The wavelength associated with its motion is
A) $1/100\ cm$
B) $6.6 \times 10^{- 34}m$
C) $1.32 \times 10^{- 35}m$
D) $6.6 \times 10^{- 28}m$
Explanation
(c)
From de-Broglie equation
$\lambda = \frac{h}{mv}$
$= \frac{6.62 \times 10^{- 34}}{0.5 \times 100}$
$= 1.32 \times 10^{- 35}m$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.