Quiz5@#!@#!@

Quiz5@#!@#!@ - Name: Class: Date: ‘ ID: A 1c510q5...

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Unformatted text preview: Name: Class: Date: ‘ ID: A 1c510q5 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. What is the wavelength of a monochromatic light beam, Where the photon energy is 3.00 eV? (h = 6.63 x 10*34 J's, e = 3.00 x 108 m/s,1nm =10—9 m, and 1 eV 2 1.6 x 10’19 J) a. 311nm _ : :- kc .. ._._ lac.” I: 0 cW-Mha (b) 414nm I: 1% A "> A '1‘; " Vi 3L” 53 hm, c. 622nm gay (:1. l 243 nm - e. 173511111 WMEk-rh+zhcc 2. Light of wavelength 450 nm is incident on a target metal that has a work function of 1.80 eV. What stopping potential is required for this combination in a phototube? (h z 6.63 x 10‘341-5, c = 3.00 x 108 m/s, 1 eV = 1.60 x 10”] and 1 nm :10“9 m) 11“, V a. 0.57v __ C ” ,_-_ emu-"c _‘ b. 0.96v Ml: ‘ Ci) " k7: 4’ Ll fl.BDe.\/ — Ofi'ijel/ d'. 456V eVQCMQ-d) ': OflSSeV :5 VS: U.‘(S§V e. 583 v 3. Light of wavelength 480 nm is incident on a metallic surface with a resultant photoelectric stopping potential of 0.55 V. What is the work function of the metal? (h I 6.63 x 10—34 J is, c : 3.00 x 108 m/s, 9leV 21.60 x 10—19 J, and 1 nm: 10—9m) a. 2.04 eV __ _, 0 MM 1 V _ . 3.19ev S19v5"; —¢VS * ‘9”! 4/5ch 12.0332\/ c. 2.59 eV A 30 d. 0.55 eV q 6. 0.27 eV 4. The de Broglie wavelength of a 0.060 kg golf ball is 4.28 x 10-34 m. What is its speed? (h 2 6.63 x 10*34 J-s) (21:). iSm/s :- q 3 --—- 26 m/s ‘-—-"‘ " e. Slm/s Mk ' O-OQ' d. 48 m/s 6. 84 m/s 5. An electron microscope operates with electrons of kinetic energy 50.0 keV. What is the wavelength of these electrons? Assume this speed is not relativistic. (h = 6.63 x 10—34 .l-s. c = 3.00 x 108 mfs. 1 eV = 1.60x10—19J,andme=9.llx 10‘31 kg) 1 {q a. 9.28x10tmm ,. “J- ,_ in __ » ,. ~fl b.7.14x10-11m 1:11: ——"’i" r) A’f/-—*g.qclxlb u. ((9 5.49x10-12m 9‘1“ 22‘ V" 3"“: d. 2.75 x 10'13 m e. 3.26 x 10-13 m Name: ID: A 6. When an electron moves from the n = 1 to the n = 2 orbit: a. both the radius and the angular momentum double. b. both the radius and the angular momentum increase by a factor of 4. c. the radius doubles and the angular momentum increases by a factor of 4. © radius increases by a factor of 4 and the angular momentum doubles. e. radius increases by a factor of 4 and the angular momentum is conserved. 7. A photon is emitted from a hydrogen atom that undergoes a transition from n = 3 to n = 2. Calculate the energy and wavelength of the photon. (The ionization energy of hydrogen is 13.6 eV, and h = 6.63 x 10‘34J"s, c = 3.00 x 108 m/s, 1 eV 21.60 x 10—19 J, and 1 nm =10“9 In) Ca) 1.89eV,658nm _, , (a ,L “L _. E— 173' (61 8V.— b. 2.21 eV, 563 nm e. l.89eV,460nm , ML _‘ DMD d. 3.196V,658nm ' ’9 ' -/ “M 1.“ 6942mm e. 2.21eV, 460 nm l-Y 0‘ 8. A ruby laser can deliver an 8.57 J pulse in approximately 50 nanoseconds. The wavelength of the light is 694.4 nm. At least how many atoms within the ruby rod had to be excited to allow this high-energy laser pulse? (h = 6.63 x 10—34J-s, c = 3.00 x 108 m/s, 1 eV 2 1.6 x 10'19 J, and 1 nm = 10—9 m) a. 4x1018 N “(.3 33?“: b. 8 x 1018 “i Q 3x10w N: agai-A _._ ggawqttq x10 : 2.5/7X10l‘l (1. 6x1020 ‘- ‘-—-————__.._.—-—--"“'--— -39 e- Inc. @19wa '- sins ...
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Quiz5@#!@#!@ - Name: Class: Date: ‘ ID: A 1c510q5...

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