Question

1. Electrons are ejected from a metal surface with energies ranging up to 0.5 eV when light with a wavelength of 538 nm is used. What is the work function of the metal in units of eV?

2.

What is the deBroglie wavelength (in nm) of a neutron (m = 1.67*10^-27 kg) moving with a speed of 68 m/s?

Enter a number with 2 decimal places.

3.

A gamma ray photon has an energy of 0.84 GeV. (1 GeV = 10⁹ eV.)
What is the wavelength of the gamma ray in fm? (1 fm = 10^-15 m)?

Enter a number with 2 digits behind the decimal point.

Answer 1

echas ng ejected fom a metol surfa So EoSourcs) 2.30 E - 2.3 ev a uro-K fun chon (%) 2.3-0.5 = m v ID