Question

0044130 10335 Physics 1201 Spring 19 Section 10:20 Kural Midterm2 Wed 03/27/19 Page 4 of 6 Name: Recitation Instructor Name (write on every paga) write on every page) 20 cm Show Work: Page 1 1) A converging lens (fc- 30cm) is 20 cm behind a diverging lens (fo- -10cm). A light ray (parallel to_ the axis) strikes the diverging lens as shown. After passing through the converging lens, the light ray is again parallel. Mark the position of the focal points for the two lenses and draw the ray diagram (light path) on the figure. (6 pts; derived from a homework question). 2) In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, 1.3m above the water level, onto the surface of the water at a point 2.5m from his foot at the edge of the pool (as shown in the figure). (Recitation question) a) Find the angle of incidence (i 1).(2 pts) 2.811 1.3 m 21 43- 2.1 m b) Find the angle of refraction (1.33). (4 pts) 2 ·1 / 2, l'で1.33 Sivn c) Where does the spot of light hit the bottom of the 2.1-m-deep pool? Measure from the bottom of the wall beneath his foot. (4 pts). fort, - 3) A 600-turn solenoid, 25 cm long, has a diameter of 2.5 cm. A 14-turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.60 s, what will be the induced emf in the short coil during this time? (9 pts) - 123370

Answer 1

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