The time taken by light to reach the earth is...? Mcqs

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The time taken by light to reach the earth is...?

(A) 4 minutes 15 seconds
(B) 8 minutes 15 seconds

(C) 10 minutes 15 seconds
(D) 7 minutes 15 seconds

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Isaac Newton gave...?

(A) Law of planetary
(B) Laws of motion and Laws of Gravitation

(C) Law of Geomaety
(D) None of these

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Rocket propulsion is based on...?

(A) Einstein's Theory of Relativity
(B) Newton's second law of motion

(C) Newton's third law of motion
(D) None of these

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Who discovered the force of attraction or repulsion:...?

(A) Faraday
(B) Wander wall

(C) Coulomb
(D) None of these

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Sulphur and Nitrogen cause _____...?

(A) Greenhouse Effect
(B) Ozone Layer Depletion

(C) Acid Rain
(D) None of these

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Acoustics is the science of

(A) Light
(B) Waves

(C) Sound
(D) Colours

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The boiling point of water depends upon the:...?

(A) Atmospheric pressure
(B) Mass

(C) Density
(D) Volume

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A metal which is liquid at room temperature is...?

(A) Gold
(B) Mercury

(C) Platinum
(D) Aluminum

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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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The luminous body emits ______...?

(A) Light
(B) Energy

(C) Waves
(D) None of these

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