Exam 38: Photons and Matter Waves

A free electron and a free proton have the same speed.This means that, compared to the matter wave associated with the proton, the matter wave associated with the electron has:

Identical particles, each with energy E, are incident on the following four potential energy barriers: Rank the barriers in terms of the probability that the particles tunnel through them, from least probability to greatest probability.

In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:

A photon in light beam A has twice the energy of a photon in light beam B.The ratio p_A/p_B of their momenta is:

A free electron in motion along the x axis has a localized wave function.If it enters a region of space where its potential energy increases,

In Compton scattering from stationary electrons the largest change in wavelength occurs when the photon is scattered through:

Separate Compton effect experiments are carried out using visible light and x rays.The scattered radiation is observed at the same scattering angle.For these experiments:

Consider the following three particles: Rank them according to the wavelengths of their waves, least to greatest.

Which of the following electromagnetic radiations has photons with the greatest energy?

A free electron and a free proton have the same momentum.This means that, compared to the matter wave associated with the proton, the matter wave associated with the electron has:

Electromagnetic radiation with a wavelength of 3.5 *10^-12 m is scattered from stationary electrons and photons that have been scattered through 50° are detected.An electron from which one of these photons was scattered receives an energy of:

A non-relativistic free electron has kinetic energy K.If its wavelength doubles, its kinetic energy is:

Maxwell's equations are to electric and magnetic fields as __________ equation is to the wave function of the particle.

The probability that a particle is in a given small region of space is proportional to:

A free electron in motion along the x axis has a localized wave function.The uncertainty in its momentum is decreased if:

The frequency of light beam A is twice that of light beam B.The ratio E_A/E_B of photon energies is:

Of the following which is the best evidence for the wave nature of matter?

The significance of |F | ² is:

In a photoelectric effect experiment the stopping potential is:

A free electron has a momentum of 5.0*10^-24 kg . m/s.Its wavelength, as given by its wave function, is: