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Question 10: NCERT Solutions for 12th Class Physics: Chapter 11-Dual Nature of Radiation and Matter
Light of frequency 7.21 × 1014 Hz is incident on a,metal surface. Electrons with a maximum speed of 6.0 × 105 m s-1 are ejected from the surface. What is the threshold frequency for photo emission of electrons?
Solution:
According to Einstein’s equation
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 11-Dual Nature of Radiation and Matter