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Science Quiz | General Knowledge Multiple Choice Questions and Answers | Page-18

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Download in pdf physics general knowledge quiz questions and answers or GK objective questions with answers. These multiple choice questions and answers include mcqs on lens, kilowatt-hour unit, insolation etc.
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(86) Lens is made up of
[A] Ordinary glass
[B] Pyrex glass
[C] Cobalt glass
[D] Flint glass

Comment

Answer: Option [D]
(87) Among the following materials sound travels fastest in
[A] vacuum
[B] steel
[C] water
[D] air

Comment

Answer: Option [B]

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(88) Kilowatt-hour is the unit of
[A] light
[B] energy
[C] force
[D] power

Comment

Answer: Option [B]
(89) The head mirror used by ENT doctors is
[A] convex
[B] concave
[C] plane
[D] plano-convex

Comment

Answer: Option [B]
(90) The word ‘insolation’ means
[A] insoluble matters
[B] matters which insulate
[C] incoming solar radiation
[D] none of the above

Comment

Answer: Option [C]

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