Properties Of Solids And Liquids Question 321
Question: A spherical drop of water has radius 1 mm If surface tension of water is $ 70\times {{10}^{-3}} $ N/mdifference of pressures between inside and out side of the spherical drop is [CPMT 2000; AIIMS 2000]
Options:
A) $ 35N/{{m}^{-2}} $
B)$ 70N/m^{2} $
C) $ 140N/m^{2} $
D)Zero
Show Answer
Answer:
Correct Answer: C
Solution:
$ \Delta P=\frac{2T}{R}=\frac{2\times 70\times {{10}^{-3}}}{1\times {{10}^{-3}}}=140N/m^{2} $
