Question

what will be the wave length of a ball of mass 0.1 kg moving with a velocity of 10ms-1​

Answer 1

Answer:-

• Mass=0.1kg=m
• Velocity=25ms^{-1}
• Planks constant=h=6.626×10^{-34}Js

According to de-Brogile equation

$\boxed{\sf \lambda=\dfrac{h}{mv}}$

$\\ \sf\longmapsto \lambda=\dfrac{6.626\times 10^{-34}Js}{0.1kg \times 25ms^{-1}}$

$\\ \sf\longmapsto \lambda=\dfrac{6.626\times 10^{-34}J}{2.5kgm}$

$\\ \sf\longmapsto \lambda=2.65\times 10^{-34}m$

$\\ \underline{\boxed{\bf{\therefore \lambda=2.65\times 10^{-34}m}}}$