Properties Of Solids And Liquids Question 342

Question: The surface tension of a soap solution is2×10−2N/m. To blow a bubble of radius 1 cm, the work done is[MP PMT 1989]

Options:

A) 4π×10−6J

B) 8π×10−6J

C) 12π×10−6J

D)16π×10−6J

Show Answer

Answer:

Correct Answer: D

Solution:

W=8πR2T=8×π×(10−2)2×2×10−2

=16π×10−6J

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