Light with a wavelength of x is incident on a metal. What would happen if the light's wavelength was changed to 4x? A.
Nothing would change.
B.
More electrons would be ejected.
C.
The ejected electrons would have more kinetic energy.
D.
The result would depend on the metal's threshold frequency.

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.