photoelectric

photoelectric - TYPICAL NUMERIC QUESTIONS FOR PHYSICS I...

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TYPICAL NUMERIC QUESTIONS FOR PHYSICS I REGULAR QUESTIONS TAKEN FROM CUTNELL AND JOHNSON PHOTOELECTRIC EFFECT Science concepts. The student knows simple examples of quantum physics. The student is expected to: (A) describe the photoelectric effect; and (B) explain the line spectra from different gas-discharge tubes. 1. Determine the energy of a single photon in a beam of light of wavelength 450 nm. A) 2.0 eV B) 2.5 eV C) 2.8 eV D) 4.2 eV E) 4.5 eV 2. A laser produces 3.0 W of light at wavelength 600 nm. How many photons per second are produced? A) 7.3 × 10 15 B) 4.2 × 10 17 C) 1.0 × 10 17 D) 3.0 × 10 18 E) 9.1 × 10 18 3. Which one of the following phrases best describes the term work function ? A) the minimum energy required to vaporize a metal B) the work required to place a charged particle on a metal surface C) the minimum energy required to remove electrons from the metal D) the minimum energy required to remove an atom from a metal surface E)
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This note was uploaded on 03/14/2011 for the course PHYSICS 105 taught by Professor Kruse,m during the Spring '08 term at Duke.

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photoelectric - TYPICAL NUMERIC QUESTIONS FOR PHYSICS I...

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