What would happen to the escape velocity if the mass of the Earth were doubled, keeping the radius the same...? Mcqs

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What would happen to the escape velocity if the mass of the Earth were doubled, keeping the radius the same...?

(A) It would remain the same
(B) It would increase by a factor of 2sqrt{2}2​

(C) It would double
(D) It would decrease by a factor of 2sqrt{2}2

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A mirror which has a reflecting surface that bulges outwards like the back side of the spoon is called ____...?

(A) Concave Mirror
(B) Plane Mirror

(C) Convex Mirror
(D) Parabolic Mirror

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In a normal human body, the total number of red blood cells is ________...?

(A) 15 trillion
(B) 20 trillion

(C) 25 trillion
(D) 30 trillion

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What is unit of conductivity...?

(A) Ohm
(B) Watt

(C) mho
(D) None of these

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Weather and climate are driven by what source(s) of energy ...?

(A) Earth’s internal heat
(B) Solar radiation

(C) Gravity
(D) Both (a) and (c)

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When a warm air is lifted off the surface in temperature depression it is called ________...?

(A) An occlusion
(B) A cold front

(C) An anticyclone
(D) A warm front

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Chlorophyll contains _____metal....?

(A) Iron
(B) Calcium

(C) Magnesium
(D) Potassium

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Which of the following female mosquito is the cause of Dengue fever...?

(A) Aedes Aegypteis
(B) Anophilies

(C) Barinohils
(D) N.O.A

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Plant grow near coastal area called ______...?

(A) Xerophyte
(B) Halophyte

(C) Epiphyte
(D) Hygrophyte

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Who invented bifocal eyeglasses...?

(A) Ibn-e-Haitem
(B) Benjamin Franklin

(C) Archemedes
(D) None

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