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Senior High School: 11th and 12th Grade
Physics
Light - Other Applications Of Light
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Q.1
Optical fibers can be used to transmit which of the following?
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Light
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Electrons
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Protons
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All of the above
Q.2
Which formula correctly states the relationship between refractive index and critical angle?
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refractive index = 1⁄sin c
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refractive index = 2⁄sin c
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refractive index = 1⁄2 sin c
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refractive index = 2⁄3 sin c
Q.3
Which of the following are examples of optical fibers?
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Endoscope
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Digital audio optical connection
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Telephone exchange coupling
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All of the above
Q.4
What is the critical angle of a medium if its refractive index is 1.5?
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40o
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41.8o
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50o
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51.8o
Q.5
Calculate the refractive index of a medium which has a critical angle of 52 .
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1.15
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1.27
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1.32
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1.44
Q.6
Which of the following is NOT an application of total internal reflection?
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Endoscopes
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Fiber Optic Broadband
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Telescopes
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Tacky Christmas Decorations!
Q.7
Lasers can be used for a variety of applications. Which of the following are lasers useful for?
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Cutting
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Cauterising
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Burning
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All of the above
Q.8
What is the normal range of sight for a human eye?
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25 cm to infinity
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5 cm to infinity
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10 cm to infinity and beyond
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25 cm to about 1 m
Q.9
What is a laser?
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A device that generates an intense beam of coherent monochromatic light
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A device that generates an intense beam of coherent bi-chromatic light
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A device that absorbs an intense beam of coherent monochromatic light
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A device that absorbs an intense beam of coherent bi-chromatic light
Q.10
What is the definition for critical angle in optics?
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The angle below which total internal reflection occurs
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The critical angle is the angle of incidence above which total internal reflection occurs
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The angle between the normal and the angle of incidence
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The angle between the normal and the angle of refraction
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