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Learn AIR FORCE MCQs with answers [Page 20 of Department 74]

R

Ram Sharma • 188.81K Points
Coach 

191) The ejection of electrons when a metal surface is irradiated is called

(A) Black body radiation
(B) Zeeman effect
(C) Photoelectric effect
(D) Atomic spectrum
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Correct Answer - Option (C)

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R

Ram Sharma • 188.81K Points
Coach 

193) Water is used in car radiator as of its

(A) high specific heat capacity
(B) low boiling point
(C) low density
(D) easy availability
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Correct Answer - Option (A)

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R

Ram Sharma • 188.81K Points
Coach 

194) In a railway track, two rails are joined end to end with a gap in between themas

(A) steel can be saved
(B) accidents due to expansion in summer can be avoided
(C) air-gaps are necessary for bearing the weight of running train
(D) accidents due to contraction in winter can be avoided
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Correct Answer - Option (B)

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R

Ram Sharma • 188.81K Points
Coach 

195) A block of wood is floating in a lake. The apparent weight of the floating block is

(A) More than its true weight
(B) Equal to its true weight
(C) Less than its true weight
(D) Zero
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Correct Answer - Option (D)

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You are learning MCQ Questions of AIR FORCE Department : 74 | Page : 20

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