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Q.

An air bubble of radius 1 mm is formed inside water at a depth 10 m below free surface (where air pressure is 105N/m2). The pressure inside the bubble is (Surface tension of water =7×102N/m)

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a

2.28×105N/m2

b

2.0028×105N/m2

c

2.14×105N/m2

d

2.0014×105N/m2

answer is D.

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Detailed Solution

p=p0+ρgh+2Tr

(105)+(103)(10)(10)+2×7×102103

=2.0014×105N/m2

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