Question:
In a photoelectric experiment, if the intensity of incident light is doubled and the frequency is kept slightly greater than threshold frequency, then the saturation photoelectric current
In a photoelectric experiment, if the intensity of incident light is doubled and the frequency is kept slightly greater than threshold frequency, then the saturation photoelectric current
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Intensity affects current, frequency affects energy of electrons.
Updated On: Apr 26, 2026
- remains constant
- is halved
- is doubled
- becomes four times
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The Correct Option is C
Solution and Explanation
Concept:
Photoelectric current depends on intensity of light: \[ I \propto \text{intensity} \] Step 1: Understand saturation current. Saturation current depends on number of emitted electrons.
Step 2: Effect of doubling intensity. Doubling intensity â doubles number of photons â doubles emitted electrons.
Step 3: Conclusion. Saturation current becomes twice.
Photoelectric current depends on intensity of light: \[ I \propto \text{intensity} \] Step 1: Understand saturation current. Saturation current depends on number of emitted electrons.
Step 2: Effect of doubling intensity. Doubling intensity â doubles number of photons â doubles emitted electrons.
Step 3: Conclusion. Saturation current becomes twice.
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