SATHEE: Properties of Matter 4 Question 10

Properties of Matter 4 Question 10

12. After the drop detaches, its surface energy is

(a) $1.4 \times 10^{- 6} J$

(b) $2.7 \times 10^{- 6} J$

(d) $8.1 \times 10^{- 9} J$

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Answer:

Correct Answer: 12. (b)

Solution:

Surface energy, $E = (4 π R^{2}) T$

$\begin{aligned} = (4 π) {(1.4 \times 10^{- 3})}^{2} (0.11) \\ = 2.7 \times 10^{- 6} J \end{aligned}$

$∴$ Correct option is (b).

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Properties of Matter 4 Question 10

12. After the drop detaches, its surface energy is

Answer:

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