Q.

A frame made of metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic  wire is reduced by 50%, the energy of the soap film will be  changed by:

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a

100 %

b

75 %

c

50 %

d

25 %

answer is C.

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Detailed Solution

surface energy =TAE α A
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Get ₹ 1 crore* worth scholarship for JEE / NEET / Foundation
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Best Books for NEET
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