The distance between the optical center and the principal focus is called ____...? Mcqs

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The distance between the optical center and the principal focus is called ____...?

(A) Focal Length
(B) Focal Point

(C) Optical Centre
(D) Centre of Curvature

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The frame work which gives shape to any structure called...?

(A) Architecture
(B) Bone

(C) Cartilage
(D) Skeleton

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Vitamin B is found in__________...?

(A) Sea Foods
(B) Fruits and Vegetables

(C) Seeds
(D) None of these

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In mercury thermometer, mercury of bulb expands and rises in the tube which has linear scale...?

(A) -20°F - 100°F
(B) 35°F - 105°F

(C) 100°F - 120°F
(D) 94°F - 108°F

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If a plants have needle like leaves to which environment would they belong...?

(A) Desert
(B) Grassland

(C) Forest
(D) None

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Earth rotates the sun in___________...?

(A) 23 hours 56 min 4 sec
(B) 24 hours

(C) 23 hours 57 min 9 sec
(D) Non of above

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The brain of human adult weighs about_________...?

(A) 1200 – 1300 gm
(B) 1600 – 2000 gm

(C) 500 – 800 gm
(D) 100 – 200 gm

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The respiratory surface of human is ______...?

(A) Nostril
(B) Bronchiole

(C) Alveoli
(D) Trachea

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Monsoon is caused by____________________...?

(A) Seasonal reversal of winds
(B) Revolution of earth

(C) Movement of clouds
(D) Rise in temperature

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If the green leaves are placed under red light, their color will become________...?

(A) Green
(B) Black

(C) Red
(D) Blue

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