The Threshold Frequency for the Photoelectric Effect of a Particular

question 21

Multiple Choice

The threshold frequency for the photoelectric effect of a particular metal is 3.0×10¹⁴ sec ^{- 1}. When this metal is illuminated by light with a frequency of 2.0×10¹⁴ sec ^{- 1}, which of the following is true?

• A) The kinetic energy of the emitted electrons is greater than those emitted by light at the threshold frequency.
• B) The number of electrons emitted is greater than that emitted by light at the threshold frequency.
• C) The light energy absorbed by the metal decreases the distance between atoms.
• D) No electrons will be emitted due to the photoelectric effect.
• E) None of these are true.

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