Physics2 Fall2006 Exam2 - Physics 1302,Fa11 2006 Prof J...

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Unformatted text preview: / Physics 1302,Fa11 2006, Prof. J. Miller 9 ’- 5 [0“ Hour Exam if 2 Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Figure 23—12 1) The wire in Figure 23—12 carries a currentl that is increasing with time at a constant rate. The induced emf in each of the loops is such that A) no emf is induced in any loop. D 7 oop A has counterclockwise emf, loop B has no induced emf, and loop C has clockwise emf. 2) A 100—52 resistor is connected in series with a 10—mH inductor across an ac source operating at 1000 Hz. What is C i e impedance of this circuit? “guru fi 00 Q B) 1000 Q a a1 8 o i \m’*(ls!m'a)fio D) 200 Q 3) A beam of light in water (71 = 1.33) enters a glass slab (n = 1.50) at an angle of incidence of 600°. What is the angle of refraction? @3302" B) 393° C) 900° D) 60.0" 4) A 4.0 cm tall object is placed 30 cm away fronfa converging lens of focal length 15 cm. What is the nature and location of the image? 3'3" r . $ P‘ ’2 The image is real, 4.0 cm tall, 30 cm on the other side of the lens. t 15 V i, x130 swa We image is real, 2.5 cm tall, 15 cm on the same side as object. i J L _ i g _ \_ ._ ‘39 M C) The image is Virtual, 2.5 cm tall, 15 cm on the other side of the lens. x K 79 3° h D) The image is virtual, 4.0 cm tall, 30 cm on the same side as object. '33) 5) The capacitive reactance of a 64—uF capacitor in an ac circuit is 4.0 x 102 Q. What is the frequency of the applied % C signal? \ 9'00 ‘ 17 LN , m law“ A) 80 Hz « @00 Hz a; Hz D) 17 HA 6) An object is placed 40 cm in front of a concave mirror with a focal length of 20 cm. What is the magnification? A 2.5 (3)10 L . L. _'L C) 2.0 - —~\o D) 1.5 7’ \ ) \‘J bu ’ 2.01 ‘40 2'1?qu r“ :3 with : is 7) Ah object is placed 6 Cm from a diverging lens with a focal length of magnitude (absolute value) 10 Cm. What is r the magnification? 6)}63 B) —0.63 C) —0.22 D) 0.22 / L5) “too? = 3.1g 8) An unpolarized light beam of intensity 10.0 W/mgp'afiasfirsfihrough a polarizer and then through an analyzer oriented at an angle of 30 degrees relative to the polarizer orientation. What is the intensity of the emerging light? A) 8.67 W/mZ D) 2.50 w/m2 f3) .75 W/m2 c) 5.00 W/m2 9) A Doppler weather radar operates at a frequency of 3.40 GHz The wave from this radar system reflects from an approaching weather system moving with a speed 0529:6111 / 5. What is the difference in frequency between the HT»; C) 419 Hz 1(QDXQiI outgoing and returning waves? gym Hz B) 351 Hz é—N s . _ 0 I O O O l 0 (b) (a) 10) A bar magnet with its north pole pointing toward a coil of wire with a cross—sectional area of 0.020 m2 and seven turns is thrust into the coil as shown in Figure 23—3(b). If the rate of change in the strength of the magnetic field caused by the motion of the bar magnet is 0.040 T / 5, what is the magnitude of the induced emf in the coil D) 322 Hz Figure 23—3 of wire? A) 5.6 x 10-1 v B) 5.6 x 10-4 V C) 5.6 x 10-2 V @56 x 10-3 V «r, '1 1.’ 33/" *10’3 ’L/ [a . S‘L " r») \ojwlinm‘“ ’r, i1— 10de '— 5ro>?(3’) l 2 D 3.9? i 7 (a; 1,, 5/ M < c ' 4,, '25 i : (“W/0”“? (335W) ...
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