Properties Of Solids And Liquids Question 348
Question: The work done in blowing a soap bubble of 10 cm radius is (Surface tension of the soap solution is $ \frac{3}{100}N/m $ )[MP PMT 1995; MH CET 2002]
Options:
A) $ 75.36\times {{10}^{-4}}joule $
B) $ 37.68\times {{10}^{-4}}joule $
C) $ 150.72\times {{10}^{-4}}joule $
D)$ 75.36joule $
Show Answer
Answer:
Correct Answer: A
Solution:
$ W=8\pi R^{2}T=8\times 3.14\times (10\times {{10}^{-2}})\times \frac{3}{100} $
$ =7.536\times {{10}^{-3}}J $
