The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)...? Mcqs

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The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)...?

(A) 5x10^8m/s
(B) 2.5x10^8m/s

(C) 1.2x10^10m/s
(D) 1.2x10^8m/s

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Persistance of vision is the principle behind...?

(A) Camera
(B) Spectroscope

(C) Cinema
(D) Periscope

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When the magnet is suspended freely, its north and south poles are always pointed towards...?

(A) North and South poles of earth respectively
(B) North and South poles of earth in the opposition direction

(C) East and West of earth respectively
(D) East and West of earth in opposite direction

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The height at which atmospheric pressure declines by a factor of e (an irrational number equal to 2.71828) is called __________....?

(A) Average height (H)
(B) Scale height (H)

(C) Mean height (H)
(D) Standard height (H)

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Hygrometer is used for measuring the ____________...?

(A) Speed of sound
(B) Density of milk

(C) Humidity of air
(D) Specific gravity of liquids

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Myopia is a disease connected with_________...?

(A) Ears
(B) Eyes

(C) Lungs
(D) Brain

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Characteristic odour of garlic is due to...?

(A) A fluorine compoune
(B) A sulphur compound

(C) A chlorine compound
(D) None of these

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For being able to see three-dimensional pictures we have to use_________...?

(A) A binocular
(B) A camera

(C) An epidiascope
(D) A stereoscope

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The term ‘Geography’ was coined first time by a Greek scholar _________ in 234BC...?

(A) Herodotus
(B) Thales of Miletus

(C) Eratosthenes
(D) Plato

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Which of the following acid is used in Ink...?

(A) Valeric
(B) Acetic

(C) Formic
(D) Tannic

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