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]

A) 0.16

B) 0.22

C) 0.25

D) 0.28