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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A metallic surface ejects electrons when exposed to green light of intensity $I$ but no photoelectrons are emitted, when exposed to the yellow light of intensity $I .$ It is possible to eject an electron from the same surface by

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Answer:

Solution:

$λ_{red} > λ_{violet}$

VIBGYOR pattern shows that VIBG all have wavelength less than that of yellow colour and hence can initiate photoelectric effect irrespective of intensity.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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