A. Multimode index fiber
B. Graded index fiber
C. Single mode step index fiber
D. Copper wire
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Related Mcqs:
- In optic fiber transmission system _____________ are used regenerate the dim light signal?
A. Diodes
B. Repeaters
C. Laser
D. Transformer - In optic fiber transmission the repeater are separated through a distance of __________ km in newer system?
A. 300km
B. 200km
C. 100km
D. 20km - The light used in optical fiber transmission is________?
A. Dichromatic
B. Monochromatic
C. Pentachromatic
D. None of theseSubmitted by: Raza Baloch
- Random errors can be reduced by_______________?
A. Taking zero correction
B. Comparing the instrument with another more accurate one
C. Taking mean of several measurements
D. All methods explained in A, B and C - A particle having the mass of an electron and the charge of a proton is called a______________?
A. Antiproton
B. Positron
C. Gamma rays
D. Photon - Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?
A. 40 W
B. 90W
C. 100W
D. 120W - The average power and instantaneous power become equal if work is done at __________________?
A. any rate
B. at variable rate
C. at uniform rate
D. at high rate - Unit of power of a lens is________________?
A. meter
B. watt
C. diopter
D. horsepower - The power of a concave lens is_______________?
A. real
B. virtual
C. positive
D. negative - Dioptre power of an concave lens of 10 cm focal length is_______________?
A. 10 dioptre
B. 10 dioptre
C. 1 / 10 dioptre
D. 1 / 10 dioptre
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