Some Explannation regarding my given answer:
In the figure, h is the initial height from which the body starts rolling down from smooth ramp & S is the distance it travels to come down to the first ramp.
and h', S' are the height distance on the second ramp respectively.
The equation used...
At low velocity the group velocity is double the phase velocity (velocity of de Broglie waves). But phase velocity is more than the speed of light and group velocity is the velocity of particle. This means that particle velocity is also more than speed of light. But This seems to violate the...