The de Broglie wavelength of an electron moving with a velocity of $1.2 \times 10^5 \, ms^{-1}$ is ...... .

According to de Broglie,matter should exhibit dual behaviour,that is both particle and wave-like properties. However,a cricket ball of mass $100 \ g$ does not move like a wave when it is thrown by a bowler at a speed of $100 \ km/h$. Calculate the wavelength of the ball and explain why it does not show wave nature.

If $v_0$ is the threshold frequency of a metal $X$,the correct relation between de Broglie wavelength $(\lambda)$ associated with the photoelectron and the frequency $(v)$ of the incident radiation 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 velocity of a golf ball with a mass of $200 \ g$ is $5 \ m/hr$,then the wavelength associated with it will be .........

Calculate the mass of a photon,if its wavelength is given as $0.35 \ nm$.