Describe how Einstein used the photoelectric effect to support ...

[jake]

Describe how Einstein used the photoelectric effect to support the particle theory of light and photons.
 
  What will be an ideal response?

Question 2

Interstellar dust consists mostly of
 
  A) ozone smog.
  B) microscopic particles of carbon and silicon.
  C) hydrogen and helium atoms.
  D) tiny grains of water ice.
  E) the same tiny particles found in household dust.

[CAPTAINAMERICA]

Answer to Question 1

He found that regardless of how intense the red light was, it would not cause a measurable output from the photocell. Yet even a weak blue or ultraviolet source would cause a flow of current from the photocell. So each photon must carry a discrete quantum of energy depending on its wavelength, with only the higher frequency photons carrying enough energy to stimulate current from the photocell.

Answer to Question 2

B

[jake]

Thanks

[CAPTAINAMERICA]

Welcome