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A liquid film is formed over a ring of ...

A liquid film is formed over a ring of area `0.02 xx 10^(4) cm^(2)` . The surace energy is
(Given surface tension of liquid = 0.5 N/m)

A

`0.03` J

B

`0.01`J

C

`0.02`J

D

`0.002` J

Text Solution

Verified by Experts

The correct Answer is:
C
Surface energy ` = T xx2A`
` = 0.5 xx 2xx0.02`
= 0.02 J
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