question_answer

In a photoelectric effect experiment the threshold wavelength of the light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be: Given E (in eV)  [JEE Main 10-4-2019 Morning]

A) 1.5 eV

B) 4.5 eV

C) 15.1 eV

D) 3.0 eV

Correct Answer: A

Solution :

[a]