Which of the following statements about the photoelectric effect is true?
Correct Answer: The photoelectric effect shows that only light above a certain frequency can cause the emission of electrons, regardless of intensity.
- Step 1: Understand what the photoelectric effect is. It is a phenomenon where light can cause electrons to be emitted from a material.
- Step 2: Learn that not all light can cause this effect. Only light with a frequency above a certain threshold can do so.
- Step 3: Recognize that the intensity of the light (how bright it is) does not matter if the frequency is below this threshold.
- Step 4: Conclude that the statement about the photoelectric effect being dependent on frequency, not intensity, is true.
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