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Q.

An air bubble of volume 15 cm3 is formed at a depth of 50 m in a lake.  If the temperature of the bubble, while rising remains constant, then the volume of the bubble at the surface will be (consider g=10ms2  and atmospheric pressure = 10 metre of water) 

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a

80 cm3

b

40 cm3

c

100 cm3

d

90 cm3

answer is B.

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Detailed Solution

P1V1=P2V2

(10+50)(15) = 10V2

V2=90 cm3

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