Properties Of Solids And Liquids Question 330

Question: A drop of liquid of diameter 2.8 mm breaks up into 125 identical drops. The change in energy is nearly (S.T. of liquid =75 dynes/cm) [CPMT 1989]

Options:

A) Zero

B)19 erg

C) 46 erg

D)74 erg

Show Answer

Answer:

Correct Answer: D

Solution:

E=4πR2T(n1/31) = 4×3.14×(1.4×101)2×75(1251/31)

=74 erg



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