Work done or energy released when a drop splits into droplets or drops merge

1. A.
   $6\pi TR^2$
2. B.
   $12\pi TR^2$
3. C.
   $8\pi TR^2$
4. D.
   $24\pi TR^2$

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1. A.
   some energy will be absorbed
2. B.
   energy absorbed is $E\left(n - n^{2/3}\right)$
3. C.
   energy released will be $E\left(n - n^{2/3}\right)$
4. D.
   energy released will be $E\left(2^{2/3} - 1\right)$

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1. A.
   $8\pi R^{2}T$
2. B.
   $16\pi R^{2}T$
3. C.
   $34\pi R^{2}T$
4. D.
   $36\pi R^{2}T$

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1. A.
   $\sqrt{\frac{T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
2. B.
   $\sqrt{\frac{2T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
3. C.
   $\sqrt{\frac{4T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$
4. D.
   $\sqrt{\frac{6T}{\rho}\!\left(\frac{1}{r}-\frac{1}{R}\right)}$

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1. A.
   $2\pi R^2 S$
2. B.
   $3\pi R^2 S$
3. C.
   $4\pi R^2 S$
4. D.
   $2\pi R S^2$

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1. A.
   $4\pi R^2\left(n^{2/3}-1\right)T$
2. B.
   $4\pi R^2\left(n^{1/3}-1\right)T$
3. C.
   $4\pi R^2\left(1-n^{1/3}\right)t$
4. D.
   $4\pi R^2\left(1-n^{2/3}\right)T$

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1. A.
   $\frac{2R^{2}}{r}$
2. B.
   $\frac{4R^{2}}{r^{2}}$
3. C.
   $\frac{4R}{r}$
4. D.
   $\frac{4R}{r^{2}}$

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1. A.
   $\ 4\pi{TR}^{2}\left\lbrack \frac{R}{r} + 1 \right\rbrack$
2. B.
   $\ 4\pi{TR}^{2}\left\lbrack \frac{R}{r} - 1 \right\rbrack$
3. C.
   $\ 4\pi{TR}^{2}\left\lbrack \frac{r}{R} + 1 \right\rbrack$
4. D.
   $\ 4\pi{Tr}^{2}\left\lbrack \frac{R}{r} - 1 \right\rbrack$

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1. A.
   $6\pi{TR}^{2}$
2. B.
   $\ 24\pi TR^{2}$
3. C.
   $\ 12\pi{TR}^{2}$
4. D.
   $16\pi{TR}^{2}$

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1. A.
   $8\pi R^2T$
2. B.
   $12\pi R^2T$
3. C.
   $4\pi R^2T$
4. D.
   $16\pi R^2T$

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1. A.
   $2\pi TD^2$
2. B.
   $4\pi TD^2$
3. C.
   $6\pi TD^2$
4. D.
   $8\pi TD^2$

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1. A.
   $4\pi TR^2\left[\dfrac{R}{r} - 1\right]$
2. B.
   $4\pi TR\left[\dfrac{R}{r} - 1\right]$
3. C.
   $4\pi T\left[\dfrac{R^2}{r^2} - 1\right]$
4. D.
   $4\pi T\left[1 + \dfrac{R^3}{r}\right]$

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1. A.
   $\dfrac{4R}{r^2}$
2. B.
   $\dfrac{4R}{r}$
3. C.
   $\dfrac{2R^2}{r}$
4. D.
   $\dfrac{4R^2}{r^2}$

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1. A.
   $(2 - 2^{2/3})$
2. B.
   $(2 - 2^{1/3})$
3. C.
   $\left(1 + \sqrt{2}\right)$
4. D.
   $\left(\sqrt{2} - 1\right)$

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