Question:
If value of surface tension of a liquid is 70 dyne/cm, then its value in N/m will be
If value of surface tension of a liquid is 70 dyne/cm, then its value in N/m will be
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To convert dyne/cm to N/m, multiply by \(10^{-3}\).
Updated On: May 2, 2026
- \(7\times 10^{3}\mathrm{N/m}\)
- \(7\times 10^{2}\mathrm{N/m}\)
- \(7\times 10^{-2}\mathrm{N/m}\)
- \(70\mathrm{N/m}\)
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
1 dyne = \(10^{-5}\) N, 1 cm = \(10^{-2}\) m.
Step 2: Detailed Explanation:
\(70\ \text{dyne/cm} = 70 \times \frac{10^{-5}\ \text{N}}{10^{-2}\ \text{m}} = 70 \times 10^{-3}\ \text{N/m} = 7 \times 10^{-2}\ \text{N/m}\).
Step 3: Final Answer:
Thus, \(70\ \text{dyne/cm} = 7 \times 10^{-2}\ \text{N/m}\).
1 dyne = \(10^{-5}\) N, 1 cm = \(10^{-2}\) m.
Step 2: Detailed Explanation:
\(70\ \text{dyne/cm} = 70 \times \frac{10^{-5}\ \text{N}}{10^{-2}\ \text{m}} = 70 \times 10^{-3}\ \text{N/m} = 7 \times 10^{-2}\ \text{N/m}\).
Step 3: Final Answer:
Thus, \(70\ \text{dyne/cm} = 7 \times 10^{-2}\ \text{N/m}\).
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