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34.Straight.Consider an object located20 cmin front of aconvexinterface (with radius30 cm) between air and a material withn= 2. Which of the following correctly describesthe image?A. upright and magnifiedB. upright and reducedC. inverted and reducedD. inverted and magnified35.Forward.Consider an object located10 cmin front of aconverginglens (with focal lengthmagnitude5 cm). Adiverginglens (with focal length magnitude10 cm) is placed at thesecond focal point of the converging lens. Which of the following correctly describes thefinal image?36.Dark and bright moments of Young relationship.Three interference patterns of thesame scale were produced from different Young-experiment set-ups. All the properties ofthe set-ups are identical except for the wavelengthsλof the light that caused them. Whichof the following is the correct relationship among the wavelengths used?37.Rays your phase and reflect.Which of the follow-ing set of reflected raysdo nothave a relative phaseshift due to reflection with respect to the incidentray?A – 10
Final ExamSecond Semester, AY 2014–2015Physics 7238.In darkness, light.Two identical, coherent, and monochro-matic light sources,S1andS2, emit light with wavelength500 nm. Which values of the distancesr1andr2will producea dark fringe?A.r1= 2.00μmandr2= 1.00μmB.r1= 2.50μmandr2= 1.50μmC.r1= 2.25μmandr2= 2.75μmD.r1= 2.50μmandr2= 1.75μm39.Green Laser.A green laser light of wavelength500 nmilluminates a slit of width0.200 mm.A pattern emerges on a screen1.50 maway from the slit. What is the width of the centralmaximum?40.Cannot Be Unseen.Two slits with width0.2 mmare separated by0.6 mm. Which of thefollowing orders corresponding to the double-slit maxima cannot be seen on a screen1.0 maway?A – 11