PHY 122

Applied Physics

Chapter 8 : Optical Fiber

DAE Common Technologies | First Year

MCQs

Chapter:8 (Optical Fiber)

Question 1:

The angle of incidence for which the angle of refraction is \(90^0\) is called:

Critical angle Crucial angle Right angle Visual angle

Question 2:

The relationship between critical angle ‘C’ and refractive index ‘n’ is:

\(n = {\frac{1}{cos {θ}_c}}\) \(n = {\frac{sin i}{sin r}}\) \(n = {\frac{1}{sin {θ}_c}}\) \({θ_c} = {\frac{1}{sin n}}\)

Question 3:

The refractive index of glass is:

1.33 1.52 2.5 1.4

Question 4:

The refractive index of water is:

1.5 1.33 2.33 0.33

Question 5:

The raw material for optical fiber is:

Copper Silver Plastic Silica

Question 6:

The signals are transmitted through optical fiber by:

Refraction Total internal Reflection Dispersion Diffraction

Question 7:

The signals transmitted through optical fiber are:

Electrical signals Light signals Sound waves Gamma rays

Question 8:

The optical fiber through which only one signal is transmitted at a time is called:

Mono mode Multi mode Multi mode Step index Multi mode Graded index

Question 9:

The diameter of the core of single mode optical fiber is approximately equal to:

5 \( mm\) 8 \( \mu m\) 5 \( m\) 5 \( cm\)

Question 10:

The diameter of the core of multi-mode fiber is approximately equal to:

50 \( mm\) 50 \( \mu m\) 5 \( \mu m\) 50 \( cm\)

Question 11:

The central part of the optical fiber is called

Cladding Core Optical center Kevlar

NOTE
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INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL

PBTE DAE PHY-122 Applied Physics | Chapter 8 : Optical Fiber | MCQs