Ten questions. The result tells you which lessons you may skip.
A cricket ball of mass \(0.2\,\text{kg}\) moves at \(33\,\text{m/s}\). Take \(h = 6.6 \times 10^{-34}\,\text{J s}\). Its de Broglie wavelength is about
An electron starts from rest and is accelerated through \(100\,\text{V}\). Its de Broglie wavelength is about
In the Davisson and Germer experiment a peak appears at \(\phi = 50°\) from surface rows \(0.215\,\text{nm}\) apart. Take \(\sin 50° = 0.766\). The wavelength of the electrons is
Which observation shows the wave nature of electrons?
A lamp at the back of a train moving at speed \(v\) shines forward. A person on the platform measures the speed of this light as
Two flashes at the ends of a moving train are simultaneous for an observer on the platform. For a passenger at the middle of the train,
A clock on a spaceship moving at \(0.6c\) shows that \(1\) hour has passed. For observers on the Earth the time that has passed is
A rod of proper length \(5\,\text{m}\) moves along its length at \(0.8c\). An observer at rest measures its length as
A particle has rest energy \(3\,\text{MeV}\) and momentum such that \(pc = 4\,\text{MeV}\). Its kinetic energy is
A photon and a slow electron have the same wavelength. Compared with the electron, the photon has