Aluminum has a frequency threshold of 9.846 Ã 1014 hz. which best explains what will happen when light with a frequency below the frequency threshold strikes aluminum? electrons will be ejected immediately. no electrons will be ejected. electrons will start being ejected several seconds after the light strikes the aluminum. no electrons will be ejected unless the intensity is very high.
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No electrons will be ejected.
Because 'threshold frequency' is the SMALLEST frequency of light able to knock-out electrons.
If the light has a frequency (f) smaller than the threshold frequency (for aluminium) the photons don't have enough energy (E=hf) to knock any electrons out of the aluminium.
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