How was Philipp Eduard Anton von Lenard awarded the Nobel Prize?

Name: Philipp Eduard Anton von Lenard. 
Country: Hungarian, German.
Date of Birth: 7 June 1862.
Died: 20 May 1947.
The subject of Study: Cathode ray, Photoelectric effect.
Noble Prize Year: Nobel Prize for Physics in 1905 for their research on the cathode rays and the discovery of many of their properties.