The light used in optical fiber transmission is________?

Related Mcqs:

1. In optic fiber transmission system _____________ are used regenerate the dim light signal?

   A. Diodes
   B. Repeaters
   C. Laser
   D. Transformer

2. Errors in the transmission of power through optic fiber can be minimized by using a______________?

   A. Multimode index fiber
   B. Graded index fiber
   C. Single mode step index fiber
   D. Copper wire

3. In optic fiber transmission the repeater are separated through a distance of __________ km in newer system?

   A. 300km
   B. 200km
   C. 100km
   D. 20km

4. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

5. Optical active crystals rotates the __________________?

   A. vibrating plane
   B. polarization plane
   C. diffraction plane
   D. interference plane

6. The SI unit of Heat is________?

   A. Watt
   B. Volt
   C. Joule
   D. Newton

7. A million electron are added to a pith ball. Its charge is________?

   A. – 1.6 × 10^–12 coulomb
   B. – 1.6 × 10^–13 coulomb
   C. – 1.6 × 10 ^–18 coulomb
   D. – 1.6 × 10 coulomb

   Submitted by: Tauseef Ali

8. The mass of Platinum cylinder kept near Paris is________?

   A. 1 gram
   B. 1 Kg
   C. 100 Kg
   D. None

   Submitted by: Zahid Jagirani

9. Angle between the rectangular components of a vector is________?

   A. Zero
   B. 30°
   C. 45°
   D. 90°

   Submitted by: Zahid Jagirani

10. The velocity of laser light is___________________?

    A. Less than ordinary light
    B. More than ordinary light
    C. Equal to ordinary light
    D. Different for different colours or frequency