Physics 30 June 2000 Diploma Exam

00 105 s d 600 1014 s 18 numerical response 12 the

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Unformatted text preview: be detected, expressed in scientific notation, is b × 10w Hz. The value of b is __________. (Record your three-digit answer in the numerical-response section on the answer sheet.) 30. Two scientists who conducted experiments that led to the determination of the mass of an electron were A. B. C. D. 31. In the photoelectric equation, the symbol W represents the A. B. C. D. 32. Planck and Einstein Rutherford and Bohr Thomson and Millikan Compton and de Broglie energy gain of the target metal wavelength of the incident radiation maximum wavelength of an emitted electron minimum energy required to release an electron from a metal Violet light striking the negative electrode in a phototube causes a current to flow in the tube. Under the same conditions, another form of light that will always cause a current to flow is A. B. C. D. blue green infrared ultraviolet 19 33. A photon of UV-B light with a wavelength of 2.90 × 10–7 m strikes an electron in a hydrogen atom in its ground state. As a result, the electron will A. B. C. D. be raised to energy level 2 be raised to energy level 3 be raised to energy level 5 not be raised to a higher energy level Use the following information to answer the next question. Maximum Kinetic Energy of Photoelectrons as a Function of Incident Electromagnetic Frequency 32 Maximum kinetic energy (10 –19 J) 28 24 20 16 12 8 4 0 0 1 2 3 4 5 6 7 15 Frequency (10 Hz) 34. The work function of the material emitting the photoelectrons is A. 2.0 × 1015 J B. 1.3 × 10–18 J C. 6.6 × 10–34 J D. 0.0 J 20 8 Use the following information to answer the next three questions. Some smoke detectors use the radioactive source americium-243 to ionize the air between two electric plates in a detection chamber. A 9.0 V battery in the detector causes a continuous current to flow between the plates. When smoke particles enter the chamber, they neutralize the ionized air molecules, which decreases the current and triggers an alarm. 35. Typically, the 9.0 V battery used in this type of detector will transfer 200 C of charge in...
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This note was uploaded on 01/14/2014 for the course PHYSICS Physics 30 taught by Professor Quinlan during the Fall '09 term at Centennial High School.

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