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

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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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The ozone layer is at height of _________kilometers from the surface of the Earth....?

(A) 45-40 kilometers
(B) 35-40 kilometers

(C) 15-40 kilometers
(D) reflects back radio waves

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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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Which of the following is not a vector quantity:...?

(A) Displacement
(B) Velocity

(C) Speed
(D) Acceleration

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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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Thomas Edison is famous for his invention of:...?

(A) Telephone
(B) Television

(C) Light Bulb
(D) None of these

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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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Which is the Hottest planet of the world...?

(A) Mercury
(B) Jupiter

(C) Venus
(D) Mars

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Phases of the moon occur because...?

(A) only that part of the moon which reflects light
(B) Our distance from the moon keeps changing

(C) The thickness of the moon's atmosphere
(D) The shadow of the Earth covers only a part of moon

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Till now, how many Pakistanis won the Nobel Prize for Physics?

(A) 1
(B) 2

(C) 3
(D) 4

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