Properties Of Solids And Liquids Question 329

Question: Two droplets merge with each other and forms a large droplet. In this process[CBSE PMT 1993; RPMT 1997, 2000; CPMT 2001; BHU 2001; AFMC 2002]

Options:

A) Energy is liberated

B) Energy is absorbed

C) Neither liberated nor absorbed

D) Some mass is converted into energy

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Answer:

Correct Answer: A

Solution:

When two droplets merge with each other, their surface energy decreases. $ W=T(\Delta A)=(negative) $ i.e. energy is released.



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