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A frame made of a metallic wire enclosin...

A frame made of a metallic wire enclosing a surface area A is covered with a soap film . If the area of the frame of metallic wire will be changed by

A

1

B

0.5

C

0.75

D

0.25

Text Solution

Verified by Experts

The correct Answer is:
B
`(E_(2))/(E_(1)) = (A_(2))/(A_(2)) = 50/100 = 0.5`
`E_(2) = 50 ` % E
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