UGC-NET 2018: (Optical Fibre Resources) SpeedTest Quiz 27

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Question 1

LASER beam of light essentially finds its application in transmission of a signal in the optical fiber communication systems due to

• AIncredible speed and Low loss transmission of signal
• BInexpensive installation cost
• CBulk availability of LASER sources
• DNone of these

Question 2

A ray of light incident on a glass slab (of refractive index 1.5) with an angle, then the value of sine of angle of refraction is:

• A
• B
• C
• D

Question 3

In optical fiber, light gets confined within the core through_____.

• ARefraction
• BTotal internal reflection at outer edge of cladding
• CTotal internal reflection at the core-cladding interface
• DReflection

Question 4

What is the chemical bonding in silicon semiconductor?

• AMetallic
• BIonic
• CCovalent
• DVan der Waals

Question 5

In a photoconductive cell the resistance, of the semiconductor material varies with intensity of incident light.

• Adirectly
• Binversely
• Cexponentially
• Dlogarithmically
  Sol

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