JEE Main & Advanced
Physics
Photo Electric Effect, X- Rays & Matter Waves
JEE PYQ-Photo Electric Effect X-rays
question_answer
A photon of wavelength l is scattered from an electron, which was at rest. The wavelength shift \[\Delta \lambda \] is three times of \[\lambda \] and the angle of scattering \[\theta \] is 60°. The angle at which the electron recoiled is \[\phi .\] The value of tan \[\phi \] is: (electron speed is much smaller than the speed of light) [JEE ONLINE 11-04-2014]