NCERT Exercise 11.2 - Dual Nature of Radiation and Matter
Question: The work function of caesium metal is 2.14 eV. When light of frequency 6 ×1014Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons, (b) Stopping potential, and (c) maximum speed of the emitted photoelectrons?
Answer: **NCERT answer:** (a) 0.34 eV = 0.54 × 10–19J (b) 0.34 V (c) 344 km/s
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