A beam of 400 nm light is adjusted to have the same intensity as a beam of 600 nm light. How does the number of photons in the 400nm beam, N400 compare to the number of photons, N600 in the 600 nm beam.   Question 5 options:   N400 = 2*N600   N400 = 32600   N400 = N600   N400 = 23600   N400 = 2600   None of the other responses are correct.

The work function and cut-off frequency for platinum are 6.35 eV and 1.90 X 1015 ?? respectively. What is the maximum wavelength of light incident on platinum releases photoelectrons from the platinum’s surface? a) 188 nm b) 158 nm c) 168 nm d) 178 nm

For light with a wavelength of 350 nm and with an intensity of /= 10-8 W/m², what is the number of photons/(m²s) in the light beam?

How many photons with a wavelength of 450 nm is required to have a mass of 1.25 micrograms?

H7

A metal surface is illuminated with light of different wavelengths and the corresponding stopping potentials of the photoelectrons are shown in the Table below. A (A) 5581 61566731 V (V)1,05 0,86 0,67 Using the Table, determine the photoelectric threshold wavelength (in Å).

A metal has a work function of 3.1eV and is illuminated by light of wavelength A = 320 nm. What is the maximum velocity of the photoelectrons emitted? Select one: а. 2.7 x 106 m/s b. 3.2 x 10' m/s С. 5.9 x 105 m/s O d. 5.24 x 105 m/s