The experimental observation(s) below that require(s) a quantum explanation for the photoelectric effect
a. is that more photoelectrons are emitted when the light frequency increases.
b. is that the maximum kinetic energy of the photoelectrons is related linearly to the frequency of the light.
c. is that every metal surface has a work function, a minimum amount of energy needed to free electrons.
d. is that the stopping potential measures the kinetic energy of the photoelectrons.
e. are all of the above.
b
You might also like to view...
Which one of the following IS NOT a characteristic of terrestrial planets?
a. low average density b. orbits inside the asteroids c. craters in old surfaces d. small diameters e. very few satellites
Two instruments produce a beat frequency of 5 Hz. If one has a frequency of 264 Hz, what could be the frequency of the other instrument?
a. 269 Hz b. 254 Hz c. 264 Hz d. 5 Hz e. 274 Hz
The brightest stars of a young open cluster will be:
A) Cepheid variables. B) massive blue main sequence stars. C) red giants. D) yellow main sequence stars like the Sun. E) T Tauri variables.
The place the Sun stops its northward motion along the ecliptic is the
A) equator. B) prime meridian. C) summer solstice. D) vernal equinox.