If work done in increasing the size of rectangular soap film with dimensions 8 cm × 3.75 cm to 10 cm × 6 cm is 2 × 10–4 J. The surface tension of film in newton per meter is
If work done in increasing the size of rectangular soap film with dimensions 8 cm × 3.75 cm to 10 cm × 6 cm is 2 × 10–4 J. The surface tension of film in newton per meter is
Option 1 -
A
Option 2 -
B
Option 3 -
C
Option 4 -
D
-
1 Answer
-
Correct Option - 3
Detailed Solution:Change in surface energy = work done
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|DE0| = –10.2

]
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rn? µn2
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