JEE Main 2019 Physics question

PhysicsDual Nature of Matter and RadiationJEE Main 2019

The electric field of light wave is given as . This light falls on a metal plate of work function 2 eV. The stopping potential of the photo-electrons is: Given, E (in eV) = Å.

Answer: (C)

Solution

λ = 5000 Å ⇒ E = 2.475 eV; V.

Question ID VK-009399