Practice Hallwachs’ And Lenard’s Observations (11.3.2)

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6 sample questions

Question 1.
What does the photoelectric effect describe?
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Think about electron behavior with light.
Question 2.
Explain the significance of threshold frequency.
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Remember how different metals behave with light.
3Question 3.
Who discovered the photoelectric effect?
- Einstein
- Hallwachs
- Lenard
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Consider the scientist known for working with metals and light.
4Question 4.
True or False: Different metals have the same threshold frequency.
- True
- False
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Think about zinc versus alkali metals.
Question 5.
You have a piece of metal with a threshold frequency of 5 × 10^14 Hz. Will this metal emit electrons when exposed to light of frequency 6 × 10^14 Hz?
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Compare the frequencies.
Question 6.
Explain why higher frequency light will emit electrons with greater kinetic energy compared to lower frequency light.
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Refer to the relationship between frequency and energy.

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