List of top Physics Questions on de broglie hypothesis asked in WBJEE

Two base balls(masses; m₁=100g, and m₂=50g) are thrown. Both move with uniform velocity, but the velocity of m₂ is 1.5 times that of m₁.The ration of de Broglie wavelengths λ(m₁) : λ(m₂) is given by

The de Broglie wavelength of an electron is $0.4 � 10^{-10}$ m when its kinetic energy is $1.0\, keV$. Its wavelength will be $1.0 \times 10^{-10}\, m$, when its kinetic energy is