In the structure of fiber, the light is guided through the core due to total internal:

Related Mcqs:

1. Which of the following branch of Physics deals with the internal structure of earth?

   A. Biophysics B. Geophysics C. Plasma physics D. Atomic physics Submitted by: AFNAN FAHIM KHATTAK...

2. Internal friction of fluid is called_________?

   A. Viscosity B. Surface tension C. Resistance D. Cohesive force Submitted by: Malik Asghar Hussain...

3. When white light is passed through a prism, it splits into __________ colours.

   A. 5 B. 6 C. 7 D. 8...

4. The speed of light is __________?

   A. 280,000 km/s B. 300,000 km/s C. 320,000 km/s D. none of these Submitted by: Jawad Bukhari...

5. 1 light year = ?

   A. 9.5×106 km B. 9.5×109 km C. 9.5×1012 km D. 9.5×1018 km...

6. What are the primary colors of Light?

   A. White, Black, Blue B. Red, Yellow, Blue C. Red, Orange, Blue D. Red, Green, Blue...

7. Clocks, which moves with the velocities comparable with the velocity of light, run ?

   A. fast B. slow C. equal to the velocity of light D. with zero velocity...

8. A light year is a unit of ?

   A. Time B. Energy C. distance D. Mass...

9. Television signals are converted into light signals by___________?

   A. Optical fiber B. Transistor C. Decoder D. Photo diode E. None of these...

10. When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________?

    A. Visible B. Transparent C. Invisible D. opaque E. None of these...