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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Which is used as an electrode in the dry cell...?

(A) Lead
(B) Graphite

(C) Molybdenum
(D) None of these

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Day and night changes due to...?

(A) Earth' revolution
(B) Earth's rotation accompanied with its revolution

(C) Earth's rotation around its axis
(D) None of these

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Tianwen-1 mission of China is related to_________...?

(A) Mars
(B) Jupiter

(C) Sun
(D) Moon

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Who discovered the Law of Gravitation...?

(A) Sir Isaac Newton
(B) Louis Pasture

(C) Galileo
(D) Wlliam Henry

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One BTS is equal to...?

(A) 550 Joules
(B) 1055 Joules

(C) 1550 Joules
(D) None of these

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Rainfall is measured using a...?

(A) Salinometer
(B) Rainoscope

(C) Rain gauge
(D) Rainometer

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Which is the largest volcano of the world...?

(A) Mauna Loa
(B) Mauna Kea

(C) Mount Etna
(D) None of these

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Which of the following gases has an important role in maintaining atmospheric temperature...?

(A) Nitrogen
(B) Argon

(C) Oxygen
(D) Carbon dioxide

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What is the meaning of Latin word “Aqua”...?

(A) Water
(B) Earth

(C) Fire
(D) Air

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