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

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

(A) Reflection
(B) Refraction

(C) Diffraction
(D) None of these

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A body is in neutral equilibrium when its center of gravity _______...?

(A) Is at the lowest position
(B) Remains at same height

(C) Is at highest position
(D) Is at its base

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In the periodic table, columns is considered to be a ____...?

(A) Periods
(B) Groups

(C) Zigzag
(D) Diagonal

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At what angle above the horizon must the sun be to create a rainbow...?

(A) 90 degrees
(B) 60 degrees

(C) 40 degrees
(D) 65 degrees

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What melted rock eventually becomes lava...?

(A) Iron
(B) Metals

(C) Magma
(D) Coal

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GPS (Global Positioning System) is used for _____...?

(A) Space exploration
(B) Mapping

(C) Identify location of objects on Earth
(D) Provide weather forecasting

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The maize seed is surrounded by a seed coat and it has an opening called...?

(A) Micropyle
(B) Embryo

(C) Endosperm
(D) None

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Which of the following is a ferromagnetic material ...?

(A) Tungsten
(B) Aluminium

(C) Copper
(D) Nickel

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The human eye forms the image of an object at its________...?

(A) Cornea
(B) Pupil

(C) Iris
(D) Retina

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The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg...?

(A) 4 days
(B) 12 days

(C) 16 days
(D) 8 days

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