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PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2014

PhysicsEasysingle choice

The light of wavelength $4000 \overset{˚}{A}$ falls on a photosensitive substance whose work function is $2 eV$ . Its stopping potential is

Answer:

Solution:

As $K_{m a x} = \frac{h c}{λ} - ϕ_{0}$ $= 3.1 eV - 2 eV = 1.1 eV$ $V_{0} = 1.1 V$

Stream:AIIMSSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2014

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