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# clicker22 - is 3 x 10 8 m/s 1 1.80 2 1.67 3 0.6 4 1.2 A...

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3/8/2010 1 The primary winding of an electric train transformer has 400 turns, and the secondary has 50. If the input voltage is 120 V(rms), what is the output voltage? 1. 480 V 2. 60 V 3. 15 V 4. 10 V Quiz Qn. 1 The electric field in an electromagnetic wave is oriented in what direction with respect to its associated magnetic field ? 1. parallel 2. anti-parallel 3. perpendicular 4. at a 45 angle Quiz Qn. 1

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3/8/2010 2 The speed of light is determined by 1. 2. 3. 4. Quiz Qn. 2 As the angle of incidence is increased for a ray incident on a reflecting surface, the angle between the incident and reflected rays ultimately approaches what value? 1. zero 2. 45 3. 90 4. 180 Quiz Qn. 3
3/8/2010 3 Quiz Qn. 4 If the speed of light through an unknown liquid is measured at 1.8 x 10 8 m/s, what is the index of refraction of this liquid? (speed of light in vacuum

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Unformatted text preview: is 3 x 10 8 m/s) 1. 1.80 2. 1.67 3. 0.6 4. 1.2 A light ray in air enters and passes through a block of glass. What can be stated with regard to its speed after it emerges from the block? 1. Speed is less than when in glass. 2. Speed is less than before it entered glass. 3. Speed is same as that in glass. 4. Speed is same as that before it entered glass. Quiz Qn. 5 3/8/2010 4 Quiz Qn. 6 When light disperses as it passes through a prism, which of the following colors move at the lowest speed in the prism? 1. blue 2. red 3. blue and red move at the same speed 4. yellow Quiz Qn. 7 A fiber optic cable (n=1.5) is submerged in water (n=1.33). What is the critical angle (in degrees) for light to stay inside the cable? 1. 83.1 2. 62. 5 3. 41.8 4. 27.6...
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## This note was uploaded on 03/15/2010 for the course PHY 102 taught by Professor Luo during the Spring '08 term at SUNY Buffalo.

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clicker22 - is 3 x 10 8 m/s 1 1.80 2 1.67 3 0.6 4 1.2 A...

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