Optical fiber works on the principle of ______...? Mcqs

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Optical fiber works on the principle of ______...?

(A) Scattering
(B) Total Internal Reflection

(C) Interference
(D) Principle of refraction

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The energy generation in starts is due to ...?

(A) Fission of heavy nuclei
(B) Fusion of light nuclei

(C) Fusion of heavy nuclei
(D) None of these

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Which rocks make the earth's surface or crust...?

(A) Sedimentary
(B) Igneous

(C) Metamorphics
(D) All Of Above

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Which theory revolutionized the idea of Space and Time:...?

(A) Classical field theory
(B) Classical mechanics

(C) Theory of special relativity
(D) None of these

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Dynamite was discovered by...?

(A) Daimler
(B) Mosley

(C) Alfred Nobel
(D) Freud

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The inner core of an optical fiber is __________ in composition...?

(A) Glass or plastic
(B) Copper

(C) Bimetallic
(D) Liquid

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The velocity of sound in air at sea level is...?

(A) 881 meters per second
(B) 761 meters per second

(C) 661 meters per second
(D) 561 meters per second

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Hydrometer is used to measure...?

(A) Acidity of water
(B) Specific gravity of a liquid

(C) Pollution in water
(D) Gravity of milk

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The nonrenewable source of energy is:...?

(A) Wind energy
(B) Solar energy

(C) Hydropower
(D) None of these

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Who is credited for discovery of Planetry motion___...?

(A) Nicolaus Copernicus
(B) Darwan

(C) Kepler
(D) None

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