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  • Question
  • In an optical fibre the signal is transmitted


  • Options
  • A. in a straight line path
  • B. In a curved path
  • C. due to total internal reflection
  • D. Due to refraction

  • Correct Answer
  • Due to refraction 


  • Physics problems


    Search Results


    • 1. Which one of the following processes is responsible for the glittering of air bubble rising through water?

    • Options
    • A. Reflection of light
    • B. Refraction of light
    • C. Total internal reflection of light
    • D. Scattering of light
    • Discuss
    • 2. If electric resistance is to be decreased, then the number of resistances should be connected in ________________

    • Options
    • A. Series
    • B. Parallel
    • C. Mixed arrangement
    • D. None of these
    • Discuss
    • 3. If there were no gravity, which of the following will not be there for a fluid?

    • Options
    • A. Viscosity
    • B. Surface Tension
    • C. Pressure
    • D. Upward Thrust
    • Discuss
    • 4. The spring balance works on the principle of __________

    • Options
    • A. Boyle's Law
    • B. Hooke's Law
    • C. Bernoulli's principle
    • D. Pascal's Law
    • Discuss
    • 5. Anemometer is an instrument meant for measuring __________

    • Options
    • A. velocity
    • B. air masses
    • C. wind speed
    • D. temperature
    • Discuss
    • 6. What is the resistance (in ohm) of an electrical component if a current of 0.1 A passes through it on application of 5 V of potential difference across it?

    • Options
    • A. 0.5
    • B. 100
    • C. 50
    • D. 1
    • Discuss
    • 7. The motion of a freely falling body is an example of ______________ accelerated motion.

    • Options
    • A. non-uniformly
    • B. uniformly
    • C. uniquely
    • D. specially
    • Discuss
    • 8. A galvanometer can be converted into a voltmeter by connecting with it a

    • Options
    • A. high resistance in parallel
    • B. low resistance on parallel
    • C. high resistance on series
    • D. low resistance in series
    • Discuss
    • 9. During which of the following operating conditions of an automobile, carbon monoxide content in exhaust gas is maximum?

    • Options
    • A. Acceleration
    • B. Cruising
    • C. Idle running
    • D. Deacceleration
    • Discuss
    • 10. Even after sunset, the air near the Earth's surface continue to receive heat due to

    • Options
    • A. Insolation
    • B. Terrestrial Radiation
    • C. Conduction
    • D. Convection
    • Discuss


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