Practice Effect Of Intensity Of Light On Photocurrent (11.4.1) - DUAL NATURE OF RADIATION AND MATTER

Practice: Effect of intensity of light on photocurrent

Lesson 11.4.1DUAL NATURE OF RADIATION AND MATTER

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8 questions

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6 sample questions

Question 1.
What is photocurrent?
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Think about how electrons behave when they interact with light.
Question 2.
What happens to photocurrent if intensity is increased?
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Remember, more intensity means more potential for ejection of electrons.
3Question 3.
What happens to the photocurrent when the intensity of light is increased?
- It decreases
- It stays the same
- It increases linearly
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Think about how more light can lead to more electrons being ejected.
4Question 4.
True or False: The threshold frequency is the maximum frequency of light that can produce photocurrent.
- True
- False
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Remember, it's about the requirement to eject electrons.
Question 5.
If the photocurrent at 100 W/m² is measured to be 1 mA, calculate the photocurrent at 200 W/m² under the same conditions (frequency and potential).
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Use the linear relationship between intensity and photocurrent.
Question 6.
Discuss how changing the electron emission material (like from zinc to cesium) affects photocurrent for the same intensity of light and frequency.
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Consider how the threshold frequency plays a role in this scenario.

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