1.
A particle of mass 2×10−272 \times 10^{-27} kg has de-Broglie wavelength of 3.3×10−103.3 \times 10^{-10} m. The kinetic energy of this particle is (Planck's constant h=6.6×10−34h = 6.6 \times 10^{-34} J-s)