Properties Of Solids And Liquids Question 346

Question: What is ratio of surface energy of 1 small drop and 1 large drop, if 1000 small drops combined to form 1 large drop[CPMT 1990]

Options:

A) 100 : 1

B) 1000 : 1

C) 10 : 1

D)1 : 100

Show Answer

Answer:

Correct Answer: D

Solution:

Volume of liquid remain same i.e. volume of 1000 small drops will be equal to volume of one big drop

n43πr3=43πR3

1000r3=R3

R=10r $

rR=110

surface energy of one small dropsurface energy of one big drop=4πr2T4πR2T=1100



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