Quantum Physics

Which of the following is a fundamental postulate of quantum mechanics?

What is the de Broglie wavelength of an electron moving with a velocity of 1 × 10^6 m/s? (Mass of electron = 9.11 × 10^-31 kg, h = 6.63 × 10^-34 Js)

In the photoelectric effect, which factor affects the maximum kinetic energy of emitted electrons?

If the wavelength of a photon is halved, how does its energy change?

What is the minimum frequency of light required to eject electrons from a metal with a work function of 2 eV? (1 eV = 1.6 × 10^-19 J, h = 6.63 × 10^-34 Js)

Which experiment confirmed the wave nature of electrons?

The uncertainty principle formulated by Heisenberg relates which pairs of physical quantities?

For a particle confined in a one-dimensional box of length L, the energy levels are given by E_n = (n²h²)/(8mL²). What happens to the energy levels if the box length is doubled?

In Compton scattering, the increase in wavelength of scattered X-rays depends on:

Which of the following statements about the quantum harmonic oscillator is true?