JEE Main & Advanced
Physics
Photo Electric Effect, X- Rays & Matter Waves
JEE PYQ-Photo Electric Effect X-rays
question_answer
The surface of a metal is illuminated with the light of 400 nm. The kinetic energy of the ejected photoelectrons was found to be 1.68 eV. The work function of the metal is:(\[hc=\] \[1240\text{ }eV.nm\])[AIEEE 2009]