based on the information given, which statement most correctly compares the number of ejected electrons at…
based on the information given, which statement most correctly compares the number of ejected electrons at higher temperatures to the number at lower temperatures?\na more free electrons are ejected, because the solar cell absorbs higher - energy photons.\nb more free electrons are ejected, because the solar cell absorbs more photons.\nc fewer free electrons are ejected, because the solar cell absorbs higher - energy photons.\nd fewer free electrons are ejected, because the solar cell absorbs fewer photons.
Answer
Brief Explanations:
The question relates to the photoelectric effect in solar cells. The number of ejected electrons depends on the number of absorbed photons (not their energy, which affects electron kinetic energy). The graph shows solar cell efficiency decreases with temperature, which could indicate reduced photon absorption. Higher temperatures might lead to fewer absorbed photons, decreasing ejected electrons. Options involving "higher-energy photons" are incorrect because photon energy isn't directly tied to temperature here; the key factor is photon quantity.
Answer:
D. Fewer free electrons are ejected, because the solar cell absorbs fewer photons.