The basis of the quantum mechanical model of an atom is:

$A$ cricket ball of $0.5 \ kg$ is moving with a velocity of $100 \ m/s$. The wavelength associated with its motion is

What is the de Broglie wavelength of a baseball with a mass of $120 \ g$ moving at a velocity of $44.7 \ m \ s^{-1}$?

If the kinetic energy of an electron of mass $9.0 \times 10^{-31} \ kg$ is $8.0 \times 10^{-25} \ J$,the wavelength of this electron in $nm$ is

The kinetic energy (in $J$) of a particle of mass $4.5 \times 10^{-31} \ kg$ having a wavelength of $1000 \ nm$ is : $(h = 6.62 \times 10^{-34} \ J \ s)$

The de Broglie equation applies to: