Physics Class 12
Solutions to CBSE Sample Paper - Physics Class 12

The work function for a metal surface is 4.14 eV. The threshold wavelength for this metal surface is:


  1. 4125 Å
  2. 2062.5 Å
  3. 3000 Å
  4. 6000 Å



(iii) 3000 Å

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.