The distance between the optical centre of a convex lens and its principal focus is called its_______...? Mcqs

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The distance between the optical centre of a convex lens and its principal focus is called its_______...?

(A) Focal Length
(B) Radius of Curvature

(C) Power
(D) Magnification

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4th and 5th period in periodic table are known as...?

(A) Short period
(B) Long period

(C) Normal period
(D) Very long period

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Which type of motions are present in solid...?

(A) translational
(B) rotational

(C) vibrational
(D) all of these

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How much percentage of water on the earth is saltwater...?

(A) 90%
(B) 95%

(C) 98.5%
(D) 97.5%

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Cutting down of trees called...?

(A) Afforestation
(B) Conversation

(C) Deforestation
(D) Reforestation

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The term PVC used in the plastic industry stands for______________...?

(A) Phosphavinyl chloride
(B) Phosphor vanadiu chloride

(C) Polyvinyl chloride
(D) Polyvinyl carbobate

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In thrombocytopenia condition, bone marrow makes...?

(A) Too few platelets
(B) Normal platelets

(C) Too many platelets
(D) Does not effect

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The reaction between Acid and basin to form...?

(A) Salt and water
(B) Acid solution

(C) base solution
(D) Water

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Which Planet is also known as Winter Planet...?

(A) Mercury
(B) Earth

(C) Jupiter
(D) Uranus

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The Gas is mobile phase in ______...?

(A) Liquid chromatography
(B) Solid chromatography

(C) Gas chromatography
(D) None of these

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