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A soap film of surface tension `3 xx 10^(-2)` formed in a rectangular frame can support a straw as shown in Fig. If `g = 10 ms^(-12)`, the mass of the

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A soap film of surface tension `3 xx 10^(-2)` formed in a rectangular frame can support a straw as shown in Fig. If `g = 10 ms^(-12)`, the mass of the straw is
image
A. `0.006g`
B. `0.06g`
C. `0.6g`
D. `6g`
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Correct Answer - C
`mxx10=2xx3x10^(-2)xx10/100`
or `m=6xx10^(-4)=6xx10^(-4)xx10^(3)g=0.6g`
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