Work done in stretching a liquid film on a frame

1. A.
   $2.88\times10^{-2}$ J
2. B.
   $7.2\times10^{-2}$ J
3. C.
   $1.44\times10^{-2}$ J
4. D.
   $3.6\times10^{-2}$ J

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1. A.
   $7.22 \times 10^{-6}$ J
2. B.
   $13.0 \times 10^{-5}$ J
3. C.
   $2.88 \times 10^{-5}$ J
4. D.
   $5.76 \times 10^{-5}$ J

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1. A.
   $9\times10^{-6}\,\text{J}$
2. B.
   $16\times10^{-6}\,\text{J}$
3. C.
   $40\times10^{-6}\,\text{J}$
4. D.
   $80\times10^{-6}\,\text{J}$

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1. A.
   $0.4\text{ }N/m$
2. B.
   $0.04\text{ }N/m$
3. C.
   0.4 dyne $/cm$
4. D.
   $4.0\text{ }N/m$

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1. A.
   $0.04\ \dfrac{N}{m}$
2. B.
   $0.05\ \dfrac{N}{m}$
3. C.
   $0.06\ \dfrac{N}{m}$
4. D.
   $0.07\ \dfrac{N}{m}$

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1. A.
   $100\%$
2. B.
   $75\%$
3. C.
   $50\%$
4. D.
   $25\%$

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