If the wavelength is brought down from 6000 A ˚ to 4000 A ˚ in a photoelectric experiment then what will happen?

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PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2016

PhysicsEasysingle choice

If the wavelength is brought down from $6000 \overset{˚}{A}$ to $4000 \overset{˚}{A}$ in a photoelectric experiment then what will happen?

Options:

Answer:

Solution:

When wavelength decreases, frequency increases. Also, we know that cut-off voltage (or stopping potential) increases when frequency increases. Hence, option (d) is correct. Note that work function and threshold frequency are constant for a given metal.

Stream:VITEEESubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2016

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