Earth completes one rotation on its axis in...? Mcqs

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Earth completes one rotation on its axis in...?

(A) 23 hours and 30 minutes
(B) 23 hours 56 minutes and 4.9 seconds

(C) 24 hours
(D) 24 hours 1 minute and 10 seconds

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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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Dr Abdus Salam was awarded Nobel Prize having work on which basic forces...?

(A) Electromagnetic and Molecular
(B) Electromagnetic and Electromotive

(C) Weak and Electro Magnetic
(D) None of these

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White light passing through the prism splits into_______...?

(A) 4
(B) 5

(C) 6
(D) 7

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A ball thrown vertically upwards, on reaching its highest point its value of acceleration due to gravity would be...?

(A) 9.8 m/s downwards
(B) 9.8 m/s upwards

(C) 0.8 m/s vertical
(D) None of these

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Which of the following colours are primary colours...?

(A) Red, Blue , Green
(B) Red, Blue , black

(C) Red, Blue , White
(D) Red, Blue , Orance

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The weight of an object at the centre of the earth of radius R is...?

(A) Same
(B) Weightless

(C) Rise a little
(D) None of these

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Meteorology is...?

(A) Science of atmosphere
(B) Study of weights & measures

(C) Study of growth
(D) Study of stars

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Electron was discovered by:...?

(A) Rutherford
(B) J.J Thomson

(C) James Chadwick
(D) None Of These

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Television radio phone spread signals through...?

(A) Electromagnetic waves
(B) Radio waves

(C) UV waves
(D) None of these

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