What is the time taken by sunlight to reach the earth...? Mcqs

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What is the time taken by sunlight to reach the earth...?

(A) 8 minutes
(B) 8 minutes 20 seconds

(C) 8 minutes 30 seconds
(D) 9 minutes

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The sun takes ........... years to travel around the galaxy..?

(A) One Hundred Years
(B) One millions years

(C) 225 million years
(D) 225 years

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When light passes from one medium to another, this phenomenon of change in its direction is called:...?

(A) Refraction
(B) Reflection

(C) Diffraction
(D) Propagation

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Who among the following proposed Laws of planetary motion...?

(A) Roger Bacon
(B) Isaac Newton

(C) Johannes Kepler
(D) Galileo

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If there is no Sun, The color of the sky would be ...?

(A) Orance
(B) Blue

(C) Yellow
(D) None of these

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A rocket needs the speed of .......... to escape from earth's gravity...?

(A) 22 miles per second
(B) 15 miles per second

(C) 12 miles per second
(D) 7 miles per second

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Which is the neutral particle...?

(A) Electron
(B) Proton

(C) Neutron
(D) None of these

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Which is the largest volcano of the world...?

(A) Mauna Loa
(B) Mauna Kea

(C) Mount Etna
(D) None of these

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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 blue colour of the clear sky is due to...?

(A) Refraction of light
(B) Reflection of light

(C) Diffraction of light
(D) scattering of light

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