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Physics 6C Midterm Practice

Physics 6C Midterm Practice - Physics 6C Midterm Practice...

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Physics 6C Midterm Practice Questions clas.ucsb.edu/staff/vince 1. A 5-mm tall object is placed 2 cm away from a lens, and an upright image is formed that is 5 cm tall. What is the focal length of the lens? a) -2.2 cm b) -5.0 mm c) +2.2 cm d) +3.3 cm 2. A light ray traveling in air enters a glass plate with index of refraction 1.62. The ray enters the glass at an angle of 49° to the normal. What angle does the ray make with the normal when it is in the glass? a) 28° b) 35° c) 49° d) the ray is completely reflected back into the air 3. A light ray in glass (index 1.62) is incident on an air/glass interface at an angle of 49° to the normal. What angle does the ray make with the normal when it leaves the glass and enters the air? a) 28° b) 49° c) 62° d) the ray is completely reflected back into the glass 4. Light of wavelength 600 nm falls on a single slit of width 0.015 mm. The resulting diffraction pattern is viewed on a screen 10 m away. Find the distance from the center of the pattern to the center of the second bright fringe. a) 10 cm b) 60 cm c) 80 cm d) 100 cm 5. An oil film floats on water. The refractive index of the oil is 1.4 and the index for water is 1.33.

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Physics 6C Midterm Practice - Physics 6C Midterm Practice...

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