Light of frequency $3$ times the threshold frequency is incident on a photosensitive material. What will be the saturation photoelectric current, if the intensity is halved keeping frequency constant ?

Doubled

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Halved

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One fourth

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Zero

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Solution

The correct option is B Halved
Since frequency is greater than threshold frequency. Hence photoemission will occur.
Now, photoelectric current $\propto$ Intensity of light, so it will be halved

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Light of frequency 3 times the threshold frequency is incident on a photosensitive material. What will be the saturation photoelectric current, if the intensity is halved keeping frequency constant ?

The correct option is B HalvedSince frequency is greater than threshold frequency. Hence photoemission will occur. Now, photoelectric current ∝ Intensity of light, so it will be halved

Light of frequency $3$ times the threshold frequency is incident on a photosensitive material. What will be the saturation photoelectric current, if the intensity is halved keeping frequency constant ?

The correct option is B Halved
Since frequency is greater than threshold frequency. Hence photoemission will occur.
Now, photoelectric current $\propto$ Intensity of light, so it will be halved