Question

Assuming that the smallest measurable wavelength in an experiment is 0.310 fm, what is the maximum mass of an object traveling at 745 m. s' for which the de Broglie wavelength is observable?

Answer 1

Write the expression for de Broglie as follows: 7=h Here, h is Planck's Constant = 6.626x10-34 kg mºis vis the speed of object = 745 m/s Ais the wavelength = 0.310 fmx 10m 1 fm - 0.310 x10-15 m Substitute the corresponding values in the above equation to calculate the mass of the object. ah 6.626x10-34 kg m/s 0.310x 10-15 m x 745 m/s = 0.0287x10-19 kg = 287x10-23 kg Therefore, the required solution is 287x10-> kg|